Category Archives: birds

Episode 495 The Koao

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Further reading:

Gauguin’s Magical Mystery Koao

Show transcript:

Welcome to Strange Animals Podcast. I’m your host, Kate Shaw.

The French painter Paul Gauguin moved to the island of Hiva Oa in 1901, less than two years before he died. Hiva Oa is the second largest island in the Marquesas, a volcanic archipelago in Polynesia in the South Pacific. It’s extremely remote, only slightly closer to Mexico than it is to New Zealand, although Hawaii is even closer.

During his short time on Hiva Oa, Gauguin produced quite a few paintings, including a famous one whose title translates to “The Sorcerer of Hiva Oa.” It depicts a dancer and magician named Haapuani and represents the fast-vanishing local culture. One of the details of the painting is a bird on the ground next to a small dog. But no one can identify the bird in the painting.

The bird is mostly blue but with green face and wings, and the small dog appears to be biting its wing or back. It’s about the size of a chicken, although details aren’t especially clear due to Gauguin’s painting style. The bill is a brownish-red and is thick and pointed. The eye is the same brown-red.

No one paid much attention to the bird in the painting until a man named Thor Heyerdahl published a book about the Marquesas in 1974. He was most well known for his adventures sailing a balsawood boat, the Kon-Tiki, from South America to the Polynesian islands in 1947. In 1937, though, the most notable thing Heyerdahl did was see an unusual bird that he mentioned in his book.

He wrote that the bird had no wings and ran extremely fast when he startled it. It vanished into a thick bank of ferns and although he tried to catch another glimpse of it, it was gone. He later said it was about the size of a long-legged gull.

A French explorer also wrote about this bird in 1957, although he didn’t see it himself. He said the people who lived on the island called the bird koao, which meant “burrow bird” since it was supposed to hide in burrows. It was about the size of a rooster, purplish in color with a yellow bill, and while it only had little wings, its legs were long and it was a fast runner.

By 1979, researchers investigating the koao were told that it had gone extinct from overhunting, specifically by the French colonizers of Hiva Oa. Other researchers learned that the bird was supposed to have red eyes and was the size of a duck.

The ornithologist Jean-Jacques Barloy thought the bird sounded like a type of rail. Rails are relatively small birds that mostly stay on the ground. Even rail species that can fly are weak flyers, while many species are flightless. The family is a large one and includes birds like the American coot, the takahē of New Zealand, the common moorhen that lives throughout much of western Europe, South Asia, and parts of Africa, and the spotless crake that’s common throughout much of the South Pacific. Barloy suggested in 1979 that the koao might be a spotless crake.

The spotless crake is bluish-gray with reddish-brown back and wings, a black bill, red eyes, and pale orangey legs that are long for its size. It’s shy and mostly crepuscular, but when it’s out in daylight it never goes far from vegetation where it can hide. It prefers freshwater wetlands but will also live in forests as long as it has plenty of groundcover for shelter. It eats insects, worms, crustaceans, and even carrion, as well as plant material like seeds and fruit. It can fly but it would much rather run away from danger.

This doesn’t really fit with what we know of the koao. For one thing, the spotless crake is much smaller than a duck or rooster, smaller even than a crow. It doesn’t match the size or coloration of Gauguin’s mystery bird or the reports of the koao.

Even Barloy later decided he was wrong and suggested the koao might be a different type of rail, maybe even an unknown species of takahē. The takahē is dark blue with a greenish back, and its heavy beak and strong legs are red. This is much more similar to the bird Gauguin painted. The takahē was considered extinct until a small population was rediscovered in 1948, and while it’s flightless, its ancestors weren’t. Like New Zealand, many remote islands–including Hiva Oa–have no native mammals except bats. As a result, many island birds don’t need to fly because their predators are other birds like eagles. It’s easy to hide from an eagle if you’re foraging under cover of thick plants.

Without the bird itself or its remains, identifying it was impossible. Gauguin was a post-Impressionist painter who influenced later artists of the avant-garde movement, so his paintings aren’t photo-realistic. He was just making art, not illustrating a scientific treatise. The details of his painted bird might not be totally accurate and aren’t specific enough to help with an identification. All we know is that the koao looks like a type of rail and doesn’t match any known species of bird. So we’re back where we started.

But new species of rail keep being discovered in Polynesian islands, most from subfossil remains found during archaeological excavations. In 2007 three new species of extinct rail were described from remains a few hundred years old, while a fourth specimen consisted of only two bones, not enough to identify as a new species. Those two mystery bones were found on Hiva Oa. These findings show that many more species of rail and other birds once lived on the islands, probably driven to extinction by introduced rats and other non-native animals.

A rail described in 1988 from 600-year-old remains, Porpyrio paepae, sometimes called the Marquesas swamphen, may be the koao. It lived on Hiva Oa and another nearby island and was closely related to the takahē.

French biochemist Michel Raynal has researched the koao extensively since 1980 and suggests that Gauguin witnessed a dog catch a koao in 1902. That would explain why the dog in his painting is biting the bird’s back or wing. If the bird Heyerdahl saw in 1937 was also a koao, we can determine that it was still alive at that time.

The koao may be extinct now, but at least we have a painting of it. That’s more than we have for most extinct animals.

Thanks for your support, and thanks for listening!

Episode 493: NEW The Mystery of Esconichthys and Friends

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Yes, this is a NEW episode! Thanks to Eesa, Grace, and Viki for their suggestions this week. (Actual episode starts at 3 minutes 28 seconds.)

Find the Backerkit campaign here!

Further reading:

Nix Illlustration: Esconichthys

The southern hognose snake [picture by Caudatejake – Own work, CC BY-SA 4.0]:

A beach wolf spider [photo by Memer15151 – Own work, CC BY-SA 4.0]:

Oviraptor may have looked kind of like this when alive [art by PaleoNeolitic – Own work, CC BY 4.0]:

Two halves of an esconichthys fossil:

Show transcript:

Welcome to Strange Animals Podcast. I’m your host, Kate Shaw.

Oh, hi! This is a brand new episode, earlier than I expected! I noticed recently that one of the Patreon episodes I’d scheduled for September is one that I’d already run in the main feed a few years ago. I decided to just make a new episode for this week and move the episode that would have run this week to that September slot, because I have an announcement!

For our five-year anniversary I published the book Beyond Bigfoot & Nessie: Lesser-Known Mystery Animals from Around the World, with a lot of the entries taken from episodes but also some new topics added. I always intended to do a follow-up for our ten-year anniversary, and have even done a lot of work on it. It’s called Small Mysteries, focusing on smaller mystery animals that don’t get a lot of attention. It’s about half the length of Beyond Bigfoot, all or almost all chapters taken from the podcast. But at this point, I don’t think I have time to finish it. I’m staying very busy and happy, with a part-time job taking care of people’s pets while they’re on vacation, and I’m also writing fiction again.

But since that book is half-done, and a lot of people might want a copy even if I don’t add much more to it, I’m going to make it available as an ebook only. Do you remember last time I made a crowdfunding campaign, and the people who backed the campaign got a copy of the book as soon as it was published? I’m doing that again, but NOT for Small Mysteries. It’s for a different book, called The Moonhound, a cozy fantasy set in an alternate reality Smoky Mountains. The main character is a rabbit who moves to the mountains and meets a possum, and they have adventures. Even if this doesn’t interest you, there’s a $1 backer tier and if you click that, you have the option to add the Small Mysteries ebook for $2. That means the book is $3. Does that make sense? I feel like it’s confusing.

The campaign starts on July 15, 2026 and runs through August 15, 2026. If you’re listening to the episode before July 15, 2026, you can click through the link in the show notes and follow the campaign, so that you get an email when it goes live. If it’s between July 15 and August 15, 2026, click the link in the show notes and there’s the campaign! If it’s after August 15, 2026, see if there’s a link in the show notes that will take you to a place where you can buy the ebook.

Okay, that took way too long, so let’s get to this week’s episode! We have some suggestions that have come in recently, so we’ll cover a few of those animals, and we’ll finish up with a small fossil mystery in honor of the book. Thanks to Eesa, Grace, and Viki for their suggestions! A quick shout-out to Remy and Julien, and Dylan, Emily, and Michelle for their suggestions too. I’ll get to those in the 500th episode that will run at the end of August.

We’ll start with Viki’s suggestion, the hognose snake. The name hognose is used for various species of snake, most of them in North and South America, but some in Madagascar. It’s a common snake in many parts of North America, so since we talked about the eastern hognose back in episode 81, let’s talk about the southern hognose in this episode. It’s found along the coastal plain of the southeastern United States, including parts of North and South Carolina, Georgia, and northern Florida, and because it has a restricted range where people like to live too, it’s vulnerable to habitat loss. It used to live in other states too but its range has shrunk considerably since it was first described in 1766.

The southern hognose grows about two feet long, or 61 cm, and like other hognose snakes, its nose turns up like a little pig’s snout. The shape of its nose actually may help it dig into leaf litter and dirt to hide. Some individuals are brown or gray, some are red or yellowish. It has darker blotches on its upper side and adults have white bellies. It has a big head that makes some people believe it’s venomous, but it’s actually harmless to humans and most animals.

The only animals that really need to worry about the hognose are amphibians, like toads, frogs, and salamanders, although it will also eat lizards, small mammals like mice, and even large insects. It especially likes to eat toads, and while some toads are toxic, the hognose snake is resistant to toad toxins. A toad will frequently puff itself up to make it appear larger and make it hard for a snake to swallow, but the hognose has a solution for that too. It has big teeth at the rear of its upper jaws, like fangs in the back of its mouth. It uses those teeth to puncture puffed-up toads so they deflate, just like a horrible balloon.

But the most memorable thing about the hognose is what it does when it feels threatened. Phase one is aggression. The snake will flatten its neck to look more threatening, raise its head like a cobra, and hiss and strike—but without biting. It’s just trying to scare you away. If that doesn’t work, the snake puts phase two into effect. It will flop down and roll onto its back like it’s dead, its tongue hanging out of its mouth. It even emits a foul musky smell from its cloaca. If you call its bluff and roll drama queen snake onto its belly, it will turn onto its back again, because it’s really insistent that it’s dead.

Since we’ve already scared away a lot of people who don’t like snakes, let’s learn about a spider next. Grace suggested we talk about the wolf spider, and also wonders if wolf spiders live in northern California.

Wolf spiders are common throughout the world, and while they look scary, they bite people very rarely and their venom is weak, no worse than a bee sting. The wolf spider with the biggest legspan is Hogna ingens, with a legspan less than 5 inches across, or 12 cm. It lives on one island in the Maderia archipelago, and is a beautiful soft gray with white stripes on the legs. The Carolina wolf spider is the most common one found in North America. A big female can have a legspan of four inches, or 10 cm, but its body is not much more than an inch long, or 35 mm, and the spider actually weighs less than an ounce. That’s barely 28 grams, or just a little heavier than five sheets of printer paper.

The wolf spider is a hunting spider, mostly solitary, and most species don’t spin webs. When a female lays her eggs, she attaches the egg case to the underside of her abdomen so she can take them with her while she hunts insects. When the eggs hatch, the teensy babies ride around on the top of her abdomen for a few weeks until they’re big enough to not need their mother’s protection.

Some species of wolf spider will dig a burrow to rest in, and will jump out and grab any insect that happens by, while other species of wolf spider rest in rock crevices and other small spaces. Males are smaller than females and often have flashier patterns. The Carolina wolf spider is mainly gray or brown with darker and lighter longitudinal stripes down the head and body.

Most species of wolf spider won’t come into your house, but if you do have a wolf spider in your house, you should actually consider yourself lucky. They love to eat cockroaches and ants, which are house pests. The wolf spider hunts mostly by sight and has good vision, and its eyes will even demonstrate eyeshine of various colors, depending on species, if you shine a flashlight around in the dark. Maybe don’t do that if you’re afraid of spiders.

And yes, there are wolf spiders in northern California, because there are wolf spiders in just about every part of the world except for Antarctica! Northern California actually has at least six species of wolf spider. One species does actually build a web, and there’s even a species that lives on the beach. That’s the beach wolf spider, which is a pale sandy color with darker and lighter stripes to help it blend in with sand and pebbles. It’s quite small but it moves really fast, and it’s mostly nocturnal. It lives not just in northern California but throughout beaches in North and Central America.

Next, Eesa sent a list of suggested animals, including oviraptor. I could have sworn we already covered oviraptor, but we haven’t! It’s a really interesting dinosaur, so let’s take a look now.

Oviraptor is a name that means “egg thief,” and it got this name because it was found near fossilized eggs. It lived in what is now Asia about 75 million years ago, and the first specimen was found in Mongolia (still my favorite country) back in 1923. The partial specimen was found lying across a nest of dinosaur eggs. When the dinosaur was described in 1924, it was given the name egg thief because the paleontologist Henry Fairfield Osborn assumed it died while robbing a nest to eat the eggs.

But even Osborn wrote that he might be wrong about the dinosaur, and in the 1990s new discoveries of oviraptor nesting sites proved this was the case. Oviraptor wasn’t stealing eggs, it was protecting them, because they were its own eggs. It probably actually ate fruit, seeds, and other plant material, along with small animals like lizards.

Oviraptor was a small dinosaur that was a little more than six feet long, or about 2 meters, and was the height of a medium to large dog. It walked on its hind legs. It had feathers on its arms and tail, and probably also had feathers over much of its body. It didn’t have teeth but it did have a beak that would have probablylooked a lot like a parrot’s beak. Its arms had three small claws but probably looked a lot like a wing in many ways, although scientists don’t think oviraptor could fly.

In other words, oviraptor probably looked a lot like a big, weird chicken, and like a chicken and many other birds, scientists think it sat on its eggs to keep them warm.

When a bird incubates its eggs, it’s not like you dropping down to sit on a chair. The bird’s feet are typically on either side of the eggs, and the bird squats down carefully so that its underside makes gentle contact with the eggs without crushing them. Female chickens and many other birds have a spot on the lower breast that doesn’t have any feathers, called a brood patch, which contains extra blood vessels just under the skin. This helps keep the eggs warm and is a soft part of the hen’s body, which helps cushion the eggs. We don’t know, but it’s possible oviraptor had something similar to a brood patch, and its feathered arms and tail also helped protect the eggs from cold air and rain. We now have numerous specimens that died while sitting on nests, probably buried in sandstorms, so we know that oviraptor basically brooded its nest the way modern birds do.

Finally, let’s finish with our small mystery fossil. It’s called Esconichthys apopyris and it lived about 308 million years ago in what is now the state of Illinois in North America. 308 million years ago, Illinois was a tropical area and partly covered by a warm, shallow sea. In a particular place known as the Mazon Creek formation, for a few million years conditions were just right to preserve dead animals and plants in astounding detail. A river carried dead plant materials and mud into an estuary along the ocean’s edge, where it sank and settled to the bottom of the sea floor. When an animal died, if it wasn’t eaten by something else, its body sank into this soft muddy mess. The bacteria in the mud produced carbon dioxide that combined with iron also present in the mud, which formed a mineral called siderite. This mineral encased the dead animal and slowed decay long enough for a detailed impression of the body to form in the mud. As the centuries passed and the mud became stone, the fossilized body impression was surrounded by a protective ironstone nodule. That’s why we know about the soft-bodied animals from the area, even though soft-bodied animals rarely leave fossil evidence.

Mazon Creek is where the Tully monster lived, which we talked about in episode 339, but the Tully monster isn’t the only mystery animal discovered there. Another one was Esconichthys.

We have lots of Esconichthys fossils, partly because it seems to have been extremely common, but also because it was a vertebrate. That means it had a notochord, a type of backbone. Most of the fossils we have are body impressions, so we do know a lot about what Esconichthys looked like when it was alive. What we don’t know is what it actually was.

Esconichthys was named for the Earth Science Club of Northern Illinois, ESCONI, and the latter half of its name means fish. But it doesn’t actually seem to have been a fish, even a larval fish. It grew up to about 3 inches long, or 8 cm, and had a pair of very obvious eyes, two pairs of feathery external gills, and a single fin on the underside of its tail. It didn’t have legs or any other fins. Some individuals had wide-set eyes, others had eyes that are close together, which may indicate two separate species, but we don’t know.

Esconichthys fossils are sometimes referred to as ghosts, because the limbless body with two dots for eyes does kind of look like a cartoon ghost. Other people call Esconichthys fossils grasshoppers or blades. This is because the animal’s gills were quite long and are often preserved pointing away from the rest of the body, or sometimes the rear of the body is folded upward. This can make it look roughly like a grasshopper or a pocket knife with one blade unfolded.

Esconichthys has been proposed as a larval lungfish or a larval amphibian, but it doesn’t really match either animal group. It’s the most common fossil found at the Mazon Creek formation by far, preserved in amazing detail, but scientists still have no idea what it is or what it might be related to.

You can find Strange Animals Podcast at strangeanimalspodcast.blubrry.net. That’s blueberry without any E’s.

Thanks for listening!

Episode 487: Animals and the Sense of Taste

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Further reading:

What gives bees their sweet tooth?

Show transcript:

Welcome to Strange Animals Podcast. I’m your host, Kate Shaw.

Right before I left on my trip to Belize a few months ago, my aunt Janice gave me a magazine to read on the plane, the Autumn 2021 copy of LivingBird. It’s about birds and birdwatching. I actually forgot to take it with me and it was in my car the whole time I was gone, but when I got home I took it in to read.

One article caught my eye, titled “Investigating the Sweet Tooth of Songbirds.” Literally the same day that I read that article, I stumbled across another article on ScienceDaily titled “What gives bees their sweet tooth?” And a podcast episode idea was born!

You may have heard that domestic cats can’t taste sweetness, and that’s true. When your pet cat wants to drink the milk in a bowl of sugary cereal, it’s not the sugar they care about because they can’t taste it. Also, milk isn’t good for cats and even if they can’t taste the sugar, it can end up giving them cavities.

The question is, why don’t cats taste sweetness? And what other animals can’t taste it either?

Carnivores like cats don’t need to taste sweet flavors because it’s just not present in meat, which is what carnivores eat. You can test this easily if you put two saucers on the floor for your cat, one with a small amount of unseasoned chicken and a sugar cube in the other. I guarantee you the cat will eat the chicken and play with the sugar cube, which will get sugar all over the floor so maybe don’t do that after all. This is where I share with you, for no reason, that when I was in elementary school I used to eat sugar cubes while pretending I was a horse.

Horses can taste sweet flavors like sugar because they’re herbivores. Herbivores eat plants, and in fact herbivores have a whole lot of taste buds so that they can easily tell what kind of plants they’re eating. Bitter tasting plants might be toxic while sweet ones provide lots of energy. Herbivores are also keenly attuned to the taste of salt since their diet is typically low in salt and they need to seek it out.

Humans are omnivores, and omnivores eat pretty much anything. Like our great ape cousins, we also evolved to eat a lot of fruit. Ripe fruit tastes sweet so we really like our sweet foods. Omnivores like dogs, pigs, and bears also like sweet foods because they’re high in calories and therefore provide a lot of energy.

But how does an animal lose an entire sense of taste? It’s not like all tigers woke up one day and boom, the ability to taste sweetness was gone. It happens gradually as the genes responsible for an animal’s sense of taste mutate over many generations.

Let’s take as our example the bottlenose dolphin. The ancestors of the dolphin and other cetaceans were terrestrial animals related to the ancestors of modern even-toed ungulates like hippos, camels, deer, and pigs, and were probably either herbivores or omnivores. But as the dolphin’s ancestors evolved over millions of years, they shifted to a fully marine lifestyle and a fully carnivorous diet. Over the thousands and thousands of generations, the genes that control the ability to taste sweetness mutated so much that they’re now useless, but since the dolphin doesn’t need to taste sweetness the mutations don’t matter.

In the case of the bottlenose dolphin and other cetaceans, in fact, they also can’t taste bitterness or umami. Umami is what helps you taste the difference between chicken and turkey, steak and pork, tuna and trout. Basically it’s the flavor of meat or savory foods, including cheeses. You can taste the difference between cheddar and Swiss because of the umami receptors in your taste buds, which are determined by genes.

But the dolphin eats nothing but meat! Why would it lose the ability to taste meat? Researchers think it’s because the dolphin swallows fish and other animals whole, without chewing. Cetaceans and other marine carnivores like sea lions that swallow their food whole actually have almost no taste buds at all.

If you’re wondering what happens when an animal that can’t taste sweetness has to adapt to a diet where tasting sweet foods is important, that’s exactly what happened with songbirds. The ancestors of birds lost the ability to taste sweetness millions of years ago when they were dinosaurs. Then, well, you know what happened to the non-avian dinosaurs. Suddenly the ancestors of modern birds had a lot of available ecological niches to take advantage of and they evolved rapidly to fill them. This included small birds who eat berries and nectar.

Genetic studies suggest that the ancestors of songbirds regained the ability to taste sweetness around 30 million years ago in Australia. The same thing happened in hummingbirds at about the same time. In both cases, the genes that control the ability to taste umami evolved to taste sweetness instead—but songbirds and hummingbirds adapted different umami genes. That’s what you call a subtle case of convergent evolution.

Songbirds and hummingbirds adapted to a diet high in sugar because it’s a good source of energy and easily found in flowers. In turn, flowers needed to be pollinated and have their seeds spread around, so they evolved to provide even more sugars in nectar and berries. But birds aren’t the only animals that pollinate flowers and are attracted to nectar. Insects can all detect sweetness. However, bees are exceptionally attuned to sweetness and have two taste neurons instead of one per taste bud.

Insects don’t have taste buds the same way we do, of course. In mammals, reptiles, and birds, taste buds are located on the tongue, in a few parts of the mouth, and at the top of the throat. In insects, taste receptors can be in any number of places. They’re on an insect’s mouthparts but often also on their feet, legs, and antennae.

Some amphibians have taste receptors on the body as well as concentrated in the mouth, and many fish have taste receptors all over their body. Catfish in particular have the most taste buds known, up to 175,000. Humans have about 10,000. Cats only have about 500.

Before you start feeling sorry for your cat for not being able to taste sweet foods and not having a great sense of taste in general, cats have a taste receptor we don’t. It’s the water sense. To us, a nice cold glass of water tastes refreshing but doesn’t really have a flavor. A cat or dog, and many other animals whose diet is mostly meat even if they aren’t specifically carnivores, have the ability to taste water in a way we can’t even imagine. Because meat is high in salt content, having taste buds attuned to water helps the animal drink enough water to process all that salt.

If you gave me the choice, I’d choose sweetness over the ability to taste water. But my cats would probably disagree.

Thanks for your support, and thanks for listening!

Episode 486: Two Rediscovered Birds

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Further reading:

https://www.audubon.org/news/like-finding-unicorn-researchers-rediscover-black-naped-pheasant-pigeon-bird

https://www.sci.news/paleontology/confuciusornis-shifan-11528.html

The black-naped pheasant-pigeon:

Confuciusornis:

Show transcript:

We’re going to learn about two birds that have been in the news lately.

The first is the black-naped pheasant-pigeon. The word nape refers to the back of the neck, and this bird does have a black neck. It’s a dark blue-black all over, in fact, with reddish-brown wings, a red bill, red eyes, and long yellow legs. It looks almost identical to the other three species of pheasant-pigeons known, although some scientists think they’re subspecies. Those three are the white-naped, the green-naped, and the grey-naped pheasant-pigeons, and if you’re wondering if the spot of color on the back of the neck is the easiest way to tell these birds apart, you are exactly right. All four species are native to parts of New Guinea or small islands nearby.

Pheasant-pigeons look a lot like pheasants and are about the size of a chicken, although they’re actually pigeons. They live in forests and eat seeds and fruit, and while they can fly they spend almost all of the time on the ground. We don’t know a whole lot about them because they’re so secretive and hard to spot in the wild, although the white-naped and green-naped birds are sometimes kept in zoos. In the case of the black-naped pheasant-pigeon, all scientists knew about it was from two specimens collected in 1882. It hadn’t been seen since…until September of 2022.

A team of scientists visited Fergusson Island off the east coast of Papua New Guinea in September, as part of a worldwide collaboration of scientists called The Search for Lost Birds. This is similar to the Search for Lost Frogs that has been active for over a decade, discovering lots of new amphibians and rediscovering even more. The 2022 search was actually a follow-up to a 2019 expedition that had failed to find the bird, although it did make other discoveries.

In 2022, the team brought more people and equipment, determined to make the best effort possible to find the black-naped pheasant-pigeon. They consulted with local hunters to find the best places to search, and talked to lots of residents to see if anyone had seen one, and spent day after day hiking through forested mountains. For weeks they had no luck. Then, in a remote mountain village, they finally met some people who were familiar with the bird. One man led them to the right part of the forest and they set up camera traps, but at that point they only had a few days left before they had to leave the island.

When they checked the pictures captured by the camera traps, though, they’d found it! Two of the cameras had taken pictures and video of what were definitely black-naped pheasant-pigeons, and since the cameras were several kilometers apart the pictures were probably of different individuals. The black-naped pheasant-pigeon wasn’t extinct, which means it can be protected. Habitat loss, especially from commercial logging, and feral domestic cats are the two main threats to birds in the area.

The other bird we’re going to talk about today hasn’t been seen in even longer: 119 million years, in fact. The article about this fossil was only released a few days ago as this episode goes live. You can check the show notes for links to this article and a good one about the pheasant-pigeon too.

Paleontologists discovered the bird’s fossil remains in northeastern China, in fossil beds that contain incredibly well-preserved animals and plants. The Jiufotang Formation in China dates to the early Cretaceous, between about 122 and 119 million years ago, and researchers think it’s from an area that was once a shallow lake surrounded by forests. Every so often, a nearby volcano would erupt and the resulting ash would fall into the lake, causing anoxic conditions that helped preserve animals that died and sank into the mud at the bottom of the lake. There are lots of fish, pterosaurs, birds, and dinosaurs among the fossils discovered, most of them small but a few quite large. This includes a type of tyrannosaur that probably grew around 33 feet long, or 10 meters. A few early mammals have been discovered too. In one case, the remains of 40 individual birds were found on one big slab of stone, and scientists think an entire flock of birds was killed by a volcanic ashfall or poisonous gases from the volcano.

The newly described fossil we’re talking about today was almost complete and almost completely articulated, preserved with the impression of feathers around its body. The bird has been named Confuciusornis shifan and was a little smaller than a modern crow. It had a toothless beak and a short tail, although it probably had long tail feathers. Other Confuciusornis species have been discovered with the impressions of long tail plumes.

All of the Confuciusornis fossils discovered so far were birds that could fly well but probably nowhere near as well as any bird today. But C. shifan had an adaptation in its wings not seen in any other bird, living or extinct. It had a small extra bone in the wing that acted like a cushion and probably helped the wings withstand the stresses of flight.

The most interesting thing about the different Confuciusornis species is that if we could go back in time and see them when they were alive, they probably wouldn’t have looked unusual to most people, except to bird experts who would instantly freak out. For the most part, they just looked like birds. Some specimens show preserved melanosomes under electron microscopy that indicate the feathers were various colors including white, brown, red, and black. There’s even evidence of a pattern of spots and streaks on some feathers. Their feet were adapted for perching the way many modern songbird feet are. But Confuciusornis wasn’t a direct ancestor of modern birds as far as we know.

Even though we have lots of beautifully preserved Confuciusornis fossils, the fossils can only tell us so much. We have a pretty good idea of what the birds looked like, but we don’t know much about how they lived. One specimen was found with the remains of a tiny fish inside its body, so researchers think the birds may have eaten fish or might have just been omnivores that weren’t picky about what they ate. One specimen was found with an egg beside it that was the right size to have fit through its pelvic opening, but we can’t know for sure if the egg belonged to the bird or was from another bird and just happened to have settled near the dead bird when it fell in the water.

Still, even though we only have fossil remains, that’s much better than having no knowledge of these early birds at all.

Thanks for your support, and thanks for listening!

Episode 474: The Button Quail Mystery

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DRAMA! Bird drama! Here are some further-reading links if you want to verify that I’m not vilifying anyone:

Buff-breasted Buttonquail: An image claimed to be of this species revealed

Buff-breasted Buttonquail: Smoke & Mirrors

A review of specimens of Buff-breasted Button-quail Turnix olivii suggests serious concern for its conservation outlook

A painted button quail:

Show transcript:

Welcome to Strange Animals Podcast. I’m your host, Kate Shaw.

Back in episode 136 we talked about the button quail, because that episode was about tiny animals and the button quail is really tiny. But let’s revisit the button quail this month, because we have a mystery associated with a particular species of button quail.

Button quails generally live in grasslands and are actually more closely related to shore and ocean birds like sandpipers and gulls than to actual quails, but it’s not very closely related to any other living birds. It can fly but it mostly doesn’t. Instead it depends on its coloring to hide it in the grass where it lives. It’s mostly brown with darker and lighter speckled markings, relatively large feet, and a short little tail. It eats seeds and insects along with other small invertebrates.

The button quail is especially interesting because the female is more brightly colored than the male, although not by much. In some species the female may have bright white markings, while in others her speckled markings are crisper than the males. The female is the one who calls to attract a male and who defends her territory from other females. The female even has a special bulb in her throat that she can inflate to make a loud booming call.

The male incubates the eggs and takes care of the chicks when they hatch. Baby button quails are fuzzy and active like domestic chicken babies but they’re only about the size of a bumblebee. In many species, as soon as the female has laid her eggs, she leaves them and the male and goes on to attract another male for her next clutch of eggs.

The various species of button quail live in different areas, including Africa, Asia, and Australia. The species we’re talking about today is the buff-breasted button quail, which is native to one small area of Queensland, Australia. It grows about 9 inches long, or 23 cm, which is big for a button quail, most of which are closer to the size of sparrows, and it’s reddish-brown with darker and lighter speckles. It’s critically endangered due to habitat loss and introduced animals like cats and cattle. There are only an estimated 50 individuals alive today.

But that’s only an estimate, because no one has actually for sure seen a buff-breasted button quail since 1922. Also, I’m going to call it the BBBQ from now on because that name is hard to say.

The 1922 specimen was shot by a naturalist who was collecting specimens for a museum, which was regrettably common at the time and led to a lot of endangered species being driven to extinction. The bird was already rare in 1922 and that was the last anyone saw of it until 1985, when someone reported seeing one. People flocked to the area in hopes of spotting it, but while there were lots of sightings, no one got a good picture of a BBBQ. All the pictures, and all the recordings of its calls, turned out to be of another species of button quail, a very similar bird called the painted button quail.

It’s been 100 years since the bird was last seen, so while we have lots of museum specimens, we don’t have any modern sightings. That means two things. Either the buff-breasted button quail is probably extinct…or it never actually existed in the first place.

There are two other species of button quail that live in the same areas where the BBBQ is found, the painted button quail and the brown quail. They’re smaller but otherwise look very similar, especially the painted button quail. Maybe people were mistaking larger individuals of painted button quails as a different species.

In 2018, a team of scientists from the University of Queensland conducted a search for the BBBQ. All they found were painted button quails. But they discovered something surprising that had never been documented before. During the breeding season, the female painted button quail’s feathers are much more reddish-brown, while the rest of the year the feathers on her back are more gray-brown.

The team also studied as many BBBQ skins as they could track down from museums, where they learned something else surprising. It turns out that it’s not any larger than the painted button quail, which grows up to 8 inches long, or 20 cm. So the birds are the same size and during part of the year, they have almost identical plumage. Hmm.

That doesn’t mean the buff-breasted button quail never existed. One very distinctive difference between the painted and the buff-breasted species is eye color, with the former having red eyes and the latter having yellow. As far as I know a genetic study hasn’t been carried out on the museum specimens, but it’s likely that at least some of the specimens—maybe all of them—really are BBBQs. Scientists and bird enthusiasts are still looking for the bird, and that has led to a strange controversy.

In early 2022, a naturalist named John Young published a photo on Facebook of what he said was a male buff-breasted button quail on a nest, a photo taken by a camera trap in a secret location. The location had to be secret so that no one would try to find the birds and scare them away or damage a nest. Young said he had 16 other photos of BBBQs but wasn’t going to share them until he was ready to publish his findings. He was also raising money to continue his studies at the site.

Another naturalist thought there was something fishy about the photo. He discovered that the picture is actually a cropped and flipped photo of a painted button quail bird and nest reportedly taken at a different site—published in 2018 by John Young himself and labeled by him as a painted button quail. Young had reused one of his own photos and assumed no one would notice.

But it gets worse. Back in 2013, Young got photographs of another extremely rare Australian bird, the night parrot. One day we’ll have an episode about it. It was such a big deal that he was offered a job by the Australian Wildlife Conservancy, or AWC, to study the night parrot and the buff-breasted button quail. He documented sightings and produced photos of both birds, but he didn’t stay in that job too long. That’s because some people started getting suspicious of his parrot photos. After an inquiry into the night parrot photos, the AWC concluded that the eggs in a photo of a night parrot nest were probably fake.

And Young’s dubious photos go back even farther. In 2006 he claimed to have discovered a new species of parrot in Queensland, but while initially the Queensland government supported learning about the new species, it withdrew its support when the photo turned out to be…suspicious. It looked like Young had altered the coloration of a bird to make it look like a new species. When an expert requested the original photographs, Young said he’d deleted them.

More recently, the 2018 painted button quail photo and the supposed 2022 BBBQ photo were examined by a forensic photography expert. Young had removed the metadata from both so no one could tell where they were taken, but there’s a little white stone in both pictures that’s identical, along with many other identical details.

The problem with fake sightings and photographs is that it’s actually making things worse for the buff-breasted button quail. The AWC and other conservation groups are trying to get the bird listed as endangered, which means funding for research and conservation. Now all that is in jeopardy because it’s not clear if there have actually been any sightings of the bird at all.

Hopefully the buff-breasted button quail is still around and someone will get genuine photos of it soon so it can be protected and studied. That’s assuming it’s a real bird in the first place.

Thanks for your support, and thanks for listening!

Episode 467: The Dragon Bird and Friends

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Thanks to Audie, Katie, Eilee, Emily, Maryjane, and Dylan for their suggestions this week! Sorry this episode is late–the site was down. 🙁

Further reading:

Bobolinks

A frill-neck lizard showing off:

A bobolink:

The great-eared nightjar [picture by Venkata Shreeram Mallimadugula, taken from this site]:

Another great-eared nightjar [Picture by Nigel Voaden from UK – Great Eared-Nightjar, Tangkoko, Sulawesi, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=39857392]:

Show transcript:

Welcome to Strange Animals Podcast. I’m your host, Kate Shaw.

This week we have an episode about some birds and reptiles. Thanks to Audie, Katie, Eilee, Emily, Maryjane, and Dylan for their suggestions! If this episode showed up later than usual in the podcast feed, it’s because I’ve been having trouble with the website and couldn’t get it uploaded until it was fixed.

We’ll kick off the episode with an animal that can’t kick, because snakes don’t have any legs. Audie suggested we learn about the scaleless rat snake, which means that first we have to learn about the rat snake, the ordinary one with scales.

Rat snakes are constrictors and are common throughout many parts of Asia, Europe, North America, and the Middle East, and they’re called rat snakes because they eat rats and other small animals like lizards, frogs, and baby birds.

Rat snakes are popular pets because they’re so pretty and they aren’t dangerous to humans. Different species are different colors and patterns, and the rhinoceros rat snake, also called the Vietnamese longnose snake, even has a little hornlike projection on the tip of its nose that points forward. I’m pretty sure we’ve talked about that particular rat snake before on the podcast, but I can’t look up which episode because the website is down.

Most rat snakes don’t grow much bigger than 5 feet long, or 1.5 meters, but a few species can get longer than that. The black rat snake, which lives in North America, can grow over 8 feet long, or more than 2.5 meters. It’s black with small white markings on the head, but snakes bred for sale as pets are sometimes white all over or partially white, or even albino, meaning an individual has a mutation where its body doesn’t produce pigment. Pet black rat snakes are also bred that don’t have scales.

That brings us to the scaleless rat snake. It’s an ordinary rat snake but it has a mutation that causes it to have very few scales. This is a mutation that happens occasionally in the wild since it’s a recessive trait, and while it can make the snake a little more vulnerable to injury, scaleless snakes can survive just fine in the wild. They do have belly scales like a normal snake, which are the ones that allow them to move around, and they may have a scattering of scales on other parts of the body too. A scaleless snake still sheds its skin once a year like an ordinary snake, since it’s actually the outer layer of skin that sheds along with the scales.

Scaleless rat snakes are popular as pets because they’re so soft and because their coloration is usually very bright. A snake’s coloration comes from pigments in its skin. A snake’s scales are actually transparent, so without a layer of scales, a scaleless snake looks even more colorful than a regular snake. Many species of snake have been found in the wild that are scaleless, but it seems to be a little more common in rat snakes.

Next, Dylan and Emily wanted to learn about the frill-neck lizard, which is found in northern Australia and the very southern part of New Guinea. It’s a big lizard that can grow almost three feet long, or 90 cm, including its incredibly long tail. Males are larger than females on average, with a bigger frill.

The frill is a flap of skin around the head and neck, and most of the time it’s folded back over the neck and shoulders so it’s not that noticeable. The lizard is pretty ordinary-looking that way, just a big gray or brown animal with a big head. But when the lizard feels threatened, or if it comes across another frill-neck lizard, it can extend the frill by moving the small bones and cartilage that act as struts, which also requires the lizard to open its mouth.

When extended, the frill is as much as a foot across, or 30 cm, and it’s marked with bright colors. Different individuals have different colored frills, red, orange, yellow, or white, or a mixture of colors and patterns. The size and color of the frill opening up so quickly will often startle a potential predator, allowing the lizard to escape. The frill-neck lizard can even run on two legs if it needs to, although it has to run with its head pointing straight up in the air.

The frill-neck lizard mostly eats insects, especially termites. It spends most of its time in trees and some people believe it can use its frill as a parachute, but that doesn’t actually seem to be the case.

Let’s move on to a few birds next. Maryjane suggested we learn about the bobolink, a type of blackbird native to the Americas. In summer the male bobolink is black with a pale yellow nape and white markings, and in winter he molts into a drab outfit of brown to help him hide. The female is brown with black streaks and stripes.

In the summer the bobolink flies to the northern United States and Canada to nest and raise babies, and it migrates to southern South America in winter. This is a huge distance for such a little songbird to travel, but it’s a strong flyer and can travel over a thousand miles, or 1,800 km, in a single day. It navigates using the stars at night and can sense the earth’s magnetic field too, which helps it find its way.

The bobolink prefers prairies and grassy areas. It eats seeds and insects, and especially likes rice and a type of caterpillar called the armyworm. It’s sometimes considered a pest because it eats so much rice, but then again armyworms are also considered pests and the bobolink eats so many of them that it has probably saved a lot of crops that way. While the bobolink is still numerous, its numbers have been in decline for years due to habitat loss.

The bobolink is most famous for its song. Both males and females sing, and males not only sing while perched, they sing while flying. The bobolink’s songs are varied and lovely. This is what the bobolink sounds like, first a song recorded while the bird was flying:

[bobolink song]

And here’s another song recorded while a different bird in a different place was perched and singing:

[bobolink song]

Finally, both Katie and Eilee wanted to learn about the great-eared nightjar, also called the dragon bird or the baby dragon.

Nightjars are nocturnal birds, and the great-eared nightjar is found in parts of southern and Southeast Asia. It can grow up to 16 inches long, or 41 cm, and is a chonky bird with big dark eyes and a broad bill that can open very wide. The “ears” in its name are tufts of feathers on the top of its head that look like ears or little horns. It can raise the ears if it wants to, but most of the time they just stick out backwards. Like other nightjars, the great-eared nightjar’s head looks flattened most of the time, and the bird itself spends a lot of time crouched down looking like a very flat bird, but then it sits up and pricks up its ear tufts, and it looks more like a thin owl with a long tail. The bird is brown with black markings, which makes it almost invisible at night.

During the day, the great-eared nightjar sits in a tree or just on the forest floor, so well camouflaged by its feathers that it blends in with the leaf litter or kind of looks like a piece of stump or broken-off branch. At night it flies around catching insects on the wing like a bat.

Instead of building a nest and laying eggs in it like other birds, the great-eared nightjar just lays a single egg among dead leaves on the ground. The egg, and the baby when it hatches, are so well camouflaged that it’s as safe on the ground as it would be in a nest way up in a tree.

The great-eared nightjar has an eerie call. This is what it sounds like:

[great-eared nightjar call]

You can find Strange Animals Podcast at strangeanimalspodcast.blubrry.net. That’s blueberry without any E’s. If you have questions, comments, corrections, or suggestions, email us at strangeanimalspodcast@gmail.com.

Thanks for listening!

Episode 457: Parrots!

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Thanks to Fleur, Yuzu, and Richard from NC for their suggestions this week!

Further reading:

World’s rarest parrot, extinct in wild, hatches at zoo

Kakapo recovery

This Parrot Stood 3 Feet Tall and Ruled the Roost in New Zealand Forests 19 Million Years Ago

The magnificent palm cockatoo:

The gigantic kakapo:

Show transcript:

Welcome to Strange Animals Podcast. I’m your host, Kate Shaw.

This week we have a bird episode, specifically some interesting parrots. Thanks to Fleur, Yuzu, and Richard from NC for their suggestions!

Parrots are intelligent, social birds that are mostly found in tropical and subtropical parts of the world, but not always. Most parrots eat plant material exclusively, especially seeds, nuts, and fruit, but some species will eat insects and other small animals when they get the chance. Most parrots are brightly colored, but again, not always. And, unfortunately, most parrot species are endangered to some degree due to habitat loss, hunting for their feathers and for the pet trade, and introduced predators like cats and rats.

All parrots have a curved beak that the bird uses to open nuts and seeds, but which also acts as a tool or even a third foot when it’s climbing around in trees. All parrots have strong clawed feet that they also use to climb around and perch in trees, and to handle food and tools.

Let’s start with Yuzu’s suggestions, the cockatoo and the parakeet. A parakeet is a small parrot, but it’s a term that refers to a lot of various types of small parrots. This includes an extinct bird called the Carolina parakeet.

It was small parrot that was common throughout a big part of the United States. It had a yellow and orange head and a green body with some yellow markings, and was about the size of a mourning dove or a passenger pigeon. Its story of extinction mirrors that of the passenger pigeon in many ways. The Carolina parakeet lived in forests and swamps in big, noisy flocks and ate fruit and seeds, but when European settlers moved in, turning forests into farmland and shooting birds that were considered pests, its numbers started to decline. In addition, the bird was frequently captured for sale in the pet trade and hunted for its feathers, which were used to decorate hats.

By 1860 the Carolina parakeet was rare anywhere except the swamps of central Florida, and by 1904 it was extinct in the wild. The last captive bird died in the Cincinnati Zoo in 1918, which was not only the same zoo where the last passenger pigeon died in 1914, it was the same cage. It was declared extinct in 1939.

The parakeet Yuzu is probably referencing is the budgie, or budgerigar. It’s the one that’s extremely common as a pet, and it’s native to Australia. In the wild it’s green and yellow with black markings, but the domestic version, which has been bred in captivity since the 1850s, can be all sorts of colors and patterns, including various shades of blue, yellow all over, white, and piebald, meaning the bird has patches of white on its body.

The budgie can learn to repeat words and various sounds, especially if it’s a young bird. I had two parakeets as a kid, named Dandelion and Sky so you can guess their colors, and neither learned to talk although I really tried to teach them. Some birds just aren’t interested in mimicry, while others won’t stop, especially if they get attention when they speak.

In the wild, budgies live in flocks that will travel long distances to find food and water. The birds mostly eat grass seeds, especially spinifex, but will sometimes eat wheat, especially in areas where farmland has destroyed much of their wild food. They’re social birds that are sometimes called lovebirds, although that’s the name of a different type of bird too, because they will preen and feed their mates.

Like many birds, the parakeet can see ultraviolet light, and their feathers glow in UV light. This makes them even more attractive to potential mates, as if the parakeet wasn’t beautiful enough to start with.

Yuzu also asked about the cockatoo. There are 21 species of cockatoo, also native to Australia and other nearby places, including Indonesia and New Guinea. It’s much larger than the budgie and most species have a crest of some kind. It lives in flocks and eats various types of plant material, including flowers and roots, but it will also eat insects. The cockatoo isn’t as brightly colored as many parrots, and is usually black, white, or gray, often with patches of color on the crest, cheeks, or tail.

The pink cockatoo is white with pale salmon pink markings on the body, and brighter pink and yellow on its crest. The sulphur-crested cockatoo is white with pale yellow on the undersides of the wings and tail, and a bright yellow crest. We talked about the palm cockatoo in episode 23 because not only does it look like it should be a drummer of the Muppet Animal variety, since it’s black with red cheeks and a big messy crest, it does actually use sticks and nuts to drum against tree branches, to attract a mate.

Richard from NC suggested we learn about Spix’s macaw, also called the blue macaw, because it’s considered one of the world’s rarest parrots. In fact, it was declared extinct in the wild in 2019. It only survives at all because of intensive conservation efforts, including a captive breeding program spread over multiple zoos.

The blue macaw is native to one small part of Brazil in South America, although it used to be much more common several hundred years ago. It’s blue with a gray-blue head. It’s such a beautiful parrot that it was driven to extinction by people trapping the birds to sell as pets, even though that had been outlawed by Brazil, although its numbers had been falling for centuries due to habitat loss. It relied on a particular species of tree called the tree of gold, because its flowers are bright yellow. The blue macaw nested in these trees, and its seedpods were one of its main foods. As groves made up of the tree of gold were chopped down to make way for farmland and towns, the bird became more and more rare.

Luckily, even though the blue macaw doesn’t breed very quickly in captivity, by 2022 there were enough healthy young birds to release twenty into the wild. Just a few weeks ago as this episode goes live, another egg has hatched in captivity in a bird conservation center in Belgium, after the previous hundred eggs were infertile and never hatched.

Next, Fleur wanted to learn more about the kakapo, a flightless, nocturnal parrot that lives only in New Zealand. We talked about it in episode 313, but it’s definitely time to revisit it.

The kakapo is the largest living parrot. It has green feathers with speckled markings, blue-gray feet, and discs of feathers around its eyes that make its face look a little like an owl’s face. That’s why it’s sometimes called the owl parrot. Males are almost twice the size of females on average. It can grow over two feet long, or 64 cm, and can weigh as much as 9 lbs, or about 4 kg. That’s way too heavy for it to fly, but its legs are short but strong and it will jog for long distances to find food. It can also climb really well, right up into the very tops of trees. It uses its strong legs and its large curved bill to climb. Then, to get down from the treetop more efficiently, the kakapo will spread its wings and parachute down, although its wings aren’t big enough or strong enough for it to actually fly. A big heavy male sort of falls in a controlled plummet while a small female will land more gracefully.

The kakapo evolved on New Zealand where it had almost no predators. A few types of eagle hunted it during the day, which is why it evolved to be mostly nocturnal. Its only real predator at night was one type of owl. As a result, the kakapo was one of the most common birds throughout New Zealand when humans arrived.

But by the end of the 19th century, the kakapo was becoming increasingly rare everywhere. By 1970, scientists worried that the kakapo was already extinct. Fortunately, a few of the birds survived in remote areas. Several islands were chosen as refuges, and all the kakapos scientists could find were relocated to the islands, 65 birds in total. While the kakapo is doing a lot better now than it has in decades, it’s still critically endangered. The current population is 237 individuals according to New Zealand’s Department of Conservation.

The kakapo may be the largest living parrot, but it’s not the largest parrot that ever lived. That would be the giant parrot. It’s known only from a few fossils dated to between 16 and 19 million years ago, but from those fossils scientists estimate that the giant parrot grew around 3 feet tall, or almost a meter, and possibly weighed almost twice what the kakapo weighs. It’s the largest parrot that ever lived as far as we know, and it was probably related to the kakapo.

We don’t know a lot about the giant parrot because only two fossils have been found, both of them leg bones and probably from the same individual. They bones are so big that scientists initially thought they belonged to an eagle. Hopefully soon more fossils will come to light so we can learn more about the giant parrot. For all we know, those leg bones belonged to a young parrot that wasn’t fully grown yet. Maybe the adults were even bigger than we think!

You can find Strange Animals Podcast at strangeanimalspodcast.blubrry.net. That’s blueberry without any E’s. If you have questions, comments, or suggestions for future episodes, email us at strangeanimalspodcast@gmail.com. We also have a Patreon at patreon.com/strangeanimalspodcast if you’d like to support us for as little as one dollar a month and get monthly bonus episodes.

Thanks for listening!

Episode 455: Spooky Animals

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Thanks to Richard of NC, Richard my brother, Siya, Ezra, and Owen and Aksel for their suggestions this week!

Further reading:

Creature Feature: Googly-Eyed Stubby Squid

Nocturnal Spiders Use Trapped Fireflies as Glowing Bait to Attract Additional Prey

A male vampire deer:

The adorable googly eyed squid [still taken from video linked above]:

The snowy owl [photo by Bill Bouton from San Luis Obispo, CA, USA – Snowy Owl, Bubo scandiacus, male, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=19899431]:

Show transcript:

Welcome to Strange Animals Podcast. I’m your host, Kate Shaw.

This week for monster month, let’s learn about some animals that are considered spooky, although in actuality they’re just regular animals who don’t even know the meaning of spooky. Thanks to Ezra, Owen and Aksel, Richard from NC, my brother Richard, and Siya for their suggestions!

We’ll start with the two Richards. Richard from NC suggested vampire deer, and my brother Richard suggested zombie salmon.

The vampire deer is more commonly called the water deer, but considering it has tusks growing down from its upper jaw that look like fangs, vampire deer is an excellent name. Females have short tusks, but in males they grow quite long, sometimes over 3 inches long, or 8 cm. Since the animal only stands about two feet tall at the shoulder, or 65 cm, that’s pretty impressive. Its hind legs are longer than its front, so that when it runs it sort of bounces like a rabbit. It has a very short tail, small rounded ears, and is golden brown in color with a lighter underside. It doesn’t have antlers. We talked about the musk deer in episode 366, which also has fangs instead of antlers, but the vampire deer isn’t closely related to the musk deer.

The vampire deer currently lives in Korea, China, and Russia although it used to be much more widespread. It mostly lives in reedy habitats near rivers, and it’s a solitary animal although females will sometimes congregate to eat. Males protect their territories by fighting with their tusks, although they don’t actually drink blood.

As for the zombie salmon, it’s not a type of fish but something that can happen to an ordinary salmon. The salmon is a fish that famously spends most of its adult life in the ocean, but travels up rivers to spawn. The eggs hatch in freshwater and the baby fish grow up in the river, and then they migrate to the ocean and live there for almost the rest of their lives. Eventually the fish is fully mature and ready to spawn, so it travels to the river where it was hatched, fights its way upstream, and the cycle starts all over with the new generation.

Almost all salmon die after spawning. This is partly because the energy requirements of swimming upstream is so high, but also because a salmon is genetically programmed to die after spawning. This is called senescence, and while it’s common in invertebrates like octopuses and some insects, it’s rare in vertebrates. Not only that, there’s not enough food for an adult salmon in the spawning area, and an adult salmon’s body is adapted for salt water, not fresh water, so it can’t live long in rivers as an adult anyway.

A small number of female Atlantic salmon are able to return to the ocean, recover and regain their strength, and spawn again a few years later, but for all other species, after spawning, that’s it. Within days all the salmon have died.

But sometimes, rarely, a salmon remains alive for weeks after spawning. It doesn’t have the energy to return to the ocean, and its body is in the process of shutting down for planned senescence, and the freshwater is causing damage to the fish’s skin. But still it survives, growing more and more raggedy, just like a zombie in a movie. But unlike movie zombies, it doesn’t want to eat brains. Eventually the zombie salmon dies, if something doesn’t catch and eat it first.

Next, Siya suggested the googly-eyed squid. Some people find squid and octopuses scary because they look so strange, but I admit I added this squid to the episode because I think its name is funny. It’s also called the stubby squid or the googly-eyed stubby squid. Its scientific name is Rossia pacifica, which gives you a hint that it lives in the northern Pacific Ocean. In the winter it likes shallow water without strong currents, but in summer it migrates to deeper water where it doesn’t get too warm.

The googly-eyed squid is small and closely related to the cuttlefish. It grows less than four and a half inches long, or 11 cm, including its eight short arms and two retractable tentacles. It’s usually reddish-brown or purplish in color, but like most squid it can change color when it needs to. It gets its name because it has large eyes that show white around the edges and have a black pupil, which makes it look like it has googly eyes.

During the day, the googly-eyed squid buries itself most of the way in sand or mud at the bottom of the sea floor, with just its googly eyes showing so it can watch for danger. At night it comes out to hunt small animals like crabs and other crustaceans, mollusks, and fish, but what it really likes is shrimp. Naturally, it has good eyesight.

Next, let’s talk about a bird that some people find spooky. Ezra, Owen, and Aksel all suggested the snowy owl.

The snowy owl is mostly snow-white although young birds have black and gray markings. Its eyes are yellow and it often hunts in the daytime, but not always. Its wingspan can be as much as six feet across, or 1.8 meters.

The snowy owl lives throughout the Arctic and nearby regions, especially in summer, but sometimes travels long distances to find food. It’s also migratory, traveling south for the winter. Snowy owls have been spotted in such far-flung places as Hawaii, Bermuda, Pakistan and India, Iran, and Japan and Korea.

The snowy owl mostly eats small animals like lemmings and mice, although it will kill and eat pretty much anything it can catch, including ducks and other water birds, fish, and even insects and frogs. It will sometimes eat carrion and even sometimes steals food from other birds. It swallows small animals whole, and a day or two later, regurgitates a compacted pellet made up of the indigestible parts, including bones and fur. A lot of predatory birds do this, not just snowy owls. Scientists who study the birds love finding these pellets, because they can dissect them and learn what the bird has been eating.

Not only does the snowy owl make its nest on the ground, sometimes it hunts on the ground too, just running along after an animal on its big feet.

This is what the snowy owl sounds like:

[owl call]

Let’s finish with an invertebrate that a lot of people are scared of, a spider! This particular spider is a species of sheet-web spider, which lives in Taiwan. It’s a nocturnal spider that was only described in 2012. Unlike a lot of spiders, which build upright webs to trap insects that are flying along between branches and twigs, the sheet-web spider builds its web horizontally just above the ground.

The webs are light-colored and reflect light. The spiders build their webs in shady areas, and scientists think that moths see the light reflecting off the webs, and think the webs are actually the ground in an area open to the sky. Moths like open areas like this, and moths also happen to be one of the spider’s favorite foods. When a group of scientists experimented by darkening some webs with charcoal dust, they determined that the darkened webs attracted considerably fewer moths.

But it turns out that the sheet-web spider does something even more extraordinary. If a firefly gets caught in the web, the spider doesn’t eat it—or at least, not right away. It lets it stay in the web, flashing its light. Scientists noticed this and were intrigued. Did the fireflies not taste good, or was something else going on?

They placed LEDs that blinked like fireflies in some webs, but not in others, and monitored the results. It turns out that three times the number of insects were attracted to the webs with fake fireflies, and most of those were other fireflies. Fireflies attract a mate by flashing. The spiders were taking advantage of having a built-in lure stuck in their webs. So even though spiders are very tiny and have tiny brains, sometimes they’re pretty darn smart.

You can find Strange Animals Podcast at strangeanimalspodcast.blubrry.net. That’s blueberry without any E’s. If you have questions, comments, or suggestions for future episodes, email us at strangeanimalspodcast@gmail.com. We also have a Patreon at patreon.com/strangeanimalspodcast if you’d like to support us for as little as one dollar a month and get monthly bonus episodes.

Thanks for listening!

Episode 454: Bats!

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This week we’re going to learn about a bunch of bats! Thanks to John, Murilo, and Alexandra for their suggestions!

Further reading:

Why Bats Can’t Walk: The Evolutionary Lock That Keeps Them Flying

On a Wing and a Song—Bats Belt out High-Pitched Tunes to Woo Mates

Why some bats hunt during the day

Puzzling Proto-Bats

A pekapeka just walking around catching bugs on the ground [photo by Rod Morris, from link above]:

BLOOOOOOD! but a really cute smile too:

The western red bat looks ready for Halloween!

Show transcript:

Welcome to Strange Animals Podcast. I’m your host, Kate Shaw.

This week as monster month continues, we’re going to learn about bats! We’ve talked about bats in lots of previous episodes, but we have a lot of really neat information in this one that we’ve never covered before. Thanks to John, Alexandra, and Murilo for their suggestions!

John suggested we learn about diurnal bats and also asked if there are any flightless bats, maybe ones that live on islands. There are lots of island-living bats, and many birds that live on islands evolve to be flightless. It makes sense that bats might do the same thing–but I couldn’t find any information about any known bat that has lost the ability to fly.

The reason seems to be how highly derived bats are. That means they’re specialized, the only mammal known that has ever evolved true flight. Unlike birds, which don’t need to use their legs when flying, bats’ legs are actually part of the wings. The wing membranes, called patagia, stretch not just between the elongated finger bones of the bat’s hands, they also stretch between the arms and legs, and connect the legs too.

A January 2025 study comparing bat skeletons to the skeletons of birds determined that unlike in birds, where the size of the legs doesn’t have anything to do with the size of the wings, in bats the leg size and the wing size are closely related. If a bat evolves smaller wings, its legs also evolve to become smaller. That’s why there are no bats that resemble ostriches, with tiny wings but really long legs.

Another possible reason is that bat legs have evolved to point backwards compared to other animals. It’s not just the feet, the knees are also rotated backwards. That’s why bats hang upside-down when they’re not flying. Many species of bat never land on the ground, because they literally can’t walk at all.

But there are a few species of bats that can walk quite well. One is the increasingly threatened New Zealand lesser short-tailed bat. It lives in a few places in both the North and South Islands, as well as some small islands off the coast, although it used to be much more widespread. It’s also called by its Maori name, the pekapeka.

The pekapeka mainly lives in forested areas and is quite small. It’s brown with a lighter belly, and it has big ears, as do most bats. Its eyes are small and its vision isn’t very good, but it has a good sense of smell. Its wings are small so its legs are correspondingly small too, but its legs are also strong despite their size. It has a clawed thumb toe on its feet and on its wings that helps it climb around in trees when it needs to, and it also spends about half of its time on the ground. It walks just fine, crawling with its wings folded so that the ends point up and back, out of the way. And yes, its legs are rotated backwards as you’d expect in a bat, and it roosts by hanging from its feet in trees.

The pekapeka flies normally and catches insects using echolocation, just like other microbats throughout the world. It especially likes moths. Unlike almost all other bats, it finds a lot of its food on the ground too, using its sense of smell to track down spiders, insects and larvae, and other small invertebrates. It will actually dig into the dirt and leaf litter to find food. It also eats nectar and flowers, and is an important pollinator of some plants.

One great thing about the pekapeka is that the males sing to attract a mate. The sound is so high-pitched that it’s not practical to share it here, because you probably wouldn’t be able to hear it, but I’ll link to an article that has a sample bat song so you can listen.

Another bat that can walk just fine is one suggested by Murilo, the vampire bat. In movies, vampire bats are usually depicted as being humongous, as big as a person! In reality, those big bats are actually megabats, and megabats mostly eat fruit. Megabats are the ones that are sometimes called sky puppies, because they don’t rely very much on echolocation so they don’t have the complicated ears and noses that microbats do. Until recently scientists thought megabats couldn’t echolocate at all, but now we know they can, they’re just not all that good at it. The vampire bat is tiny in comparison.

There are three species of vampire bat alive today. They share the same subfamily, Desmodontinae, but have been classified in different genera because they differ considerably from each other. Their other relations are ordinary bats that eat insects, fruit, and other things that you’d expect from bats. Vampire bats really do eat blood exclusively.

The hairy-legged vampire bat is the most basal of the three species, meaning it retains traits that haven’t changed as much from its ancestors. It feeds exclusively on bird blood. The white-winged vampire bat also mostly feeds on bird blood, but it will sometimes eat the blood of mammals. It’s the common vampire bat that eats the blood of mammals.

Vampire bats probably evolved from ancestors that ate insects. Scientists hypothesize that they might have originally specialized in eating ectoparasites of other animals, or possibly insects that were attracted to animal wounds. If that’s the case, the bat would have already been eating a lot of blood along with the insects, and at some point it started taking a shortcut to getting that yummy blood. We know this has happened at least one other time, in a bird.

I thought we had talked about the red-billed oxpecker in an old episode, but if we did, I couldn’t find it. It lives throughout the savannas of sub-Saharan Africa and is brown with a bright orange bill and eyes, with a yellow eye ring. It eats ticks that it picks off rhinoceroses, cattle, and other large mammals, but it actually mainly eats blood. It’s happy to eat the ticks, because they’re full of blood, and the animals it perches on are happy that it eats ticks, but the bird will also peck at wounds so it can drink blood directly from the animal.

So it’s likely that the vampire bat started out eating ticks or other ectoparasites, then began eating the blood that oozed from the wound after it removed a tick. From there it was a short step to biting the animal to cause blood to flow, and within four million years, it was fully adapted to drinking blood.

The vampire bat has extremely sharp front teeth that stick out so that it can use them to make little cuts in an animal’s skin, after first using its teeth to shave the fur down so it can reach the skin more easily. Its fangs lack enamel, so they stay razor sharp. The vampire bat’s saliva contains anticoagulants, so the blood won’t clot right away and the bat can lick it up until it’s full, which takes about 20 minutes. It digests blood extremely quickly, so that it absorbs the nutrients from the blood and starts urinating the extra liquid within a few minutes of starting to feed. That way it can eat more and it can also stay light enough to take flight if it’s disturbed. If you were wondering, its poop is the same as other bat poop. It does echolocate, although not as expertly as bats that eat insects, but the common vampire bat also has specialized thermoreceptors on its nose that sense heat. It’s the only mammal known that can detect infrared radiation, and the only other vertebrates known that can do the same thing are some snakes.

Because vampire bats have to be able to walk around on animals to find a good spot to bite them, the bats have evolved to be able to walk, run, and even jump just fine. Like the pekapeka, it folds the ends of its wings back out of the way and basically walks on the wrists of its wings and its backwards-pointing feet.

Even though the pekapeka and the vampire bat are comfortable running around on the ground, neither has lost the ability to fly. Being able to fly seems to be baked into being a bat. So while it’s not impossible that a bat might eventually become truly flightless, it’s unlikely.

As for bats that are diurnal, or daytime bats, there are a few. A study published in 2018 determined that of the four known species of bat that routinely go out hunting during the daytime, all four live on islands where there are no predatory birds. That doesn’t mean that all bats that live in places where there aren’t any hawks or eagles or crows are active during the day, because most species are still nocturnal, but that seems to be the one requirement for a daytime bat.

John was also interested in learning about the biggest fossil bat ever found. Bats are delicate creatures and don’t fossilize very well, so the bat fossil record is really fragmentary. For example, until 2015 the oldest pekapeka fossil discovered was only 17,500 years old. In 2015, a new fossilized pekapeka ancestor was discovered on the South Island that’s been dated to 16 to 19 million years ago. The fossil shows that the bat was adapted to walk just as the modern pekapeka is, and its teeth are similar so it probably had a similar diet—but it’s estimated to be three times the size of the pekapeka! That sounds like it must have been a huge bat, but the pekapeka only weighs 15 grams at most. That’s barely more than half an ounce, or about the same weight as a CD or DVD, not counting the case. Its ancestor is estimated to have weighed as much as 40 grams, which is almost as heavy as a golf ball. It’s also what a typical vampire bat weighs, if you were wondering.

An even bigger fossil bat has been discovered in a fossil site in France, a country in Europe, and another in Tunisia, a country in North Africa. It’s called Necromantis and is estimated to have weighed as much as 47 grams, which is the same weight as two mice. Two nervous mice, because Mecromantis had strong jaws and big teeth, which suggests it ate small vertebrates–like mice. It lived between 44 and 36 million years ago in areas that were most likely tropical.

An ancestor of the vampire bat was even bigger, possibly as much as 60 grams. That’s just over 2 ounces! That’s a bit heavier than a tennis ball. It lived in South America during the Pleistocene, so recently that in addition to fossils, we also have subfossil remains. That means they’re mineralized but not yet fully fossilized. It’s called Desmodus draculae, and it was most likely still around when humans migrated to South America around 25,000 years ago. Big as it was, it still wasn’t as big as a typical megabat.

Because bat fossils are so rare, it’s led to a scientific mystery. We don’t have any fossils of bat ancestors that weren’t yet bats, but were evolving into bats. In other words, we don’t know what bats looked like before they evolved to be flying animals. The best guess is that the earliest bat ancestors were shrew-like animals that lived in trees and ate insects.

So far we haven’t mentioned any bats that live in Arizona, suggested by Alexandra, so let’s learn about the western red bat. Most bats are black, gray, or brown in color, but the western red bat is a cheerful orange with white shoulder patches and black wing membranes. It’s ready for Halloween all the time! Males are usually more brightly colored than females.

The western red bat lives throughout western North America in summer. It migrates to the southern parts of its range in winter, as far south as Central America. It’s also called the desert red bat but it actually spends most of its life in forests, where its red coat blends in with dead leaves. It eats insects and while it doesn’t spend much time on the ground, every so often it will drop to the ground to catch an insect before hopping back into the air. Not only that, but when the western red bat migrates, it will sometimes fly along with flocks of migrating birds in the daytime.

Unlike many bats, the western red bat is solitary most of the year. Also unlike most bats, instead of having just one baby at a time, it can have up to four babies in a litter. The mother has four nipples instead of just two as in most bats, and for the first three or four weeks of the babies’ lives, the mother has to carry them around while she hunts, until they learn to fly.

As a last note about bats, Murilo specifically mentioned that vampire bats carry diseases that humans can catch. (If diseases bother you, you can stop listening now because we’re almost done.) The common vampire bat does occasionally bite humans, usually the bare big toe of someone sleeping outside, or sometimes the earlobe or even the nose. Vampire bats do show a lot of resistance to blood-borne diseases, but they still spread diseases. The best way to avoid catching a disease from a vampire bat is to not sleep outside without shelter if you can avoid it, if you’re in an area of South America where vampire bats live. That means that if you’re out camping, bring a tent even if it’s hot. Also, avoid eating the meat of wild boar from South America. Not only can boars catch diseases from vampire bats that they pass on to humans, but wild boars also eat fruit partially eaten by fruit bats that also carry diseases. The fruit bats drop partially eaten fruit, the wild boar eats the fruit along with the saliva left on it by the bat, and then the boar can get sick from the saliva.

Most mammals can catch rabies. If you see a bat out in the daytime crawling on the ground, don’t assume that you’re seeing a very rare daytime bat that can also walk around like a pekapeka. Leave the bat alone and contact animal control, because most likely the poor bat has contracted rabies. If you touch the bat, even if it doesn’t bite you, you will have to get a series of rabies vaccines to make sure you don’t come down with rabies, which is an incurable disease and always fatal. That is way scarier than anything else we’ve ever talked about on monster month episodes!

You can find Strange Animals Podcast at strangeanimalspodcast.blubrry.net. That’s blueberry without any E’s. If you have questions, comments, or suggestions for future episodes, email us at strangeanimalspodcast@gmail.com. We also have a Patreon at patreon.com/strangeanimalspodcast if you’d like to support us for as little as one dollar a month and get monthly bonus episodes.

Thanks for listening!

Episode 453: The Skeleton Coast

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It’s October, AKA Monster Month! Let’s learn about some animals of the Skeleton Coast–which sounds spooky, but actually isn’t.

Lots of brown fur seals [photo by Robur.q – Own work, CC BY-SA 4.0]:

The desert plated lizard [photo by redrovertracy, some rights reserved (CC BY) – https://www.inaturalist.org/photos/45483586, CC BY 4.0]:

Rüppell’s korhaan [photo by By Charles J. Sharp – Own work, from Sharp Photography, sharpphotography.co.uk, CC BY-SA 4.0]:

The pearl spotted owlet is cute rather than spooky, but it has a haunting call [photo by Charles J. Sharp – Own work, from Sharp Photography, sharpphotography.co.uk, CC BY-SA 4.0]:

Show transcript:

Welcome to Strange Animals Podcast. I’m your host, Kate Shaw.

It’s October at last, and that means monster month! To start us off this year, we’re going to learn about animals of the Skeleton Coast, which sounds a lot more spooky than it actually is.

The Skeleton Coast is a stretch of coastline 310 miles long, or 500 km, on the Atlantic coast of Africa. It’s part of Namibia, a huge country in southern Africa that’s mostly quite dry, with two deserts within its borders. Because the country gets so little rainfall, it has to conserve water for its people, animals, and crops, so the government is serious about conservation and natural resources. It’s home to one of the most cutting-edge water treatment plants in the world, and since the government’s establishment in 1993, it’s been working to help farmers and citizens in general to practice sustainable natural resource management. It’s also a beautiful part of the world, with amazing geography, and animals and plants found nowhere else in the world, so eco-tourism has been increasing, which helps the economy.

Namibia is also home to the San people, who call the Skeleton Coast “the land god made in anger.” The northern part of the coast is blocked off from land by huge sand dunes, while the southern part is rocky. To get there, you have to cross a desert, and then cross a treacherous marsh that’s hundreds of miles across. Then to get home, you have to go back the way you came across the marsh and the desert, because launching a boat from the Skeleton Coast is impossible if you don’t have a powerful engine.

The sea along the Skeleton Coast is treacherous, with lots of rocks offshore, extremely heavy surf, and frequent thick fogs. There are around a thousand shipwrecks visible along the coast, with the oldest dating to the 1530s, and thousands more documented that aren’t visible or haven’t been found yet. Ships still wreck there sometimes.

Animals do live along the Skeleton Coast, especially seals. The brown fur seal, also called the Cape fur seal, has a huge colony in the northern part of the coast, which is a national park. The brown fur seal lives in various parts of southern Africa, with a subspecies that also lives on some islands off southeastern Australia and Tasmania. A big male can grow 7 ½ feet long, or 2.3 meters, and as you can probably guess from its name, it’s mostly brown in color. Males have a short mane on the neck that’s usually darker than the rest of its fur. It has magnificent long whiskers, especially males.

The brown fur seal mainly eats fish, but it also likes squid and will eat other animals like crustaceans and even birds. It can dive deeply and stay underwater for over seven minutes. It spends most of its life in the water, mainly only coming out on land to breed, give birth, and take care of the babies.

The seals used to be killed for their fur, but this was outlawed in Namibia in 1990 except by special permit, which has allowed the seals’ numbers to increase. The Skeleton Coast is named that mainly because of the massive amounts of seal bones that fur hunters left behind after killing and skinning seals.

Unfortunately, something the rocks around the Skeleton Coast collect are plastic debris, especially fishing debris like nets. So many brown fur seals get caught in the debris and drown that a group of volunteers called Ocean Conservation Namibia go out almost every day to help untangle seals.

The Skeleton Coast doesn’t get any rain to speak of, or only trace amounts in any given year, but it does get thick sea fogs. Most of the plants along the coast are succulents and lichens that don’t need a lot of moisture. A lot of larger animals that hunt seals along the coast actually live farther inland, like hyenas and lions. The animals that live year-round on the coast are much smaller.

That includes the desert plated lizard, which is only found in parts of Namibia and Angola. It’s a slender but strong lizard that can grow over 6 inches long, or 16 cm, not counting its long tail. It’s mainly the color of sand, tan or orange and gray, or gray-white, or some other similar variation, with a white belly, and this is because it lives on sand dunes.

The sand dunes are covered with scrubby vegetation, so in the daytime the lizards come out and eat anything they can find among the plants or in the sand, from seeds and other plant materials to insects and other arthropods. If a potential predator approaches, the lizard will dive into the sand to hide. Its scales are smooth and its legs are short, which allows it to “swim” through sand efficiently and fast. The desert plated lizard lives in small colonies, and although it only lives in this one small part of Africa, it’s extremely common throughout its territory.

A lot of birds visit the skeleton coast—306 of them, in fact, including Rüppell’s korhaan, a species of bustard that only lives in Namibia. It’s a gray and brown bird with black and white markings, with a long neck and fairly long legs. Its body is chunky but its neck is very thin, which makes it look slightly weird but very cute. It mainly eats insects, especially termites, but it will also eat small animals like lizards when it can find them, and it also eats seeds and other plant material. It’s small for a bustard, because bustards are pretty big birds, with the largest species, the great bustard that lives in parts of Europe and Asia, standing over three feet tall, or about a meter. Rüppell’s korhaan is about a third of that size.

Let’s finish with another bird that’s a little more spooky, considering that it’s October. It’s the pearl-spotted owlet, a little owl that’s found throughout much of sub-Saharan Africa, including along the Skeleton Coast. It’s a very small owl, barely more than 8 inches long, or 21 cm. It’s brown with lots of white speckles and streaks, yellow eyes, and two black spots on the back of its head that look like MORE EYES. It shares this trait with some other species of owl, including the northern pygmy owl of western North America, and in fact the two owls belong to the same genus, so they’re closely related.

The pearl spotted owlet is active during the day, but it mostly hunts at night. Since it’s such a small owl, barely larger than a typical songbird, it eats lots of insects, but it will also eat other small birds, bats, lizards, and any other small animal it can catch.

It’s not a very spooky-looking owl, despite having eye spots on the back of its head, but it has a spooky call. Listen to this and be glad you’re not a little bat hearing this sound and wondering if you’re in danger:

[owl call]

You can find Strange Animals Podcast at strangeanimalspodcast.blubrry.net. That’s blueberry without any E’s. If you have questions, comments, or suggestions for future episodes, email us at strangeanimalspodcast@gmail.com. We also have a Patreon at patreon.com/strangeanimalspodcast if you’d like to support us for as little as one dollar a month and get monthly bonus episodes.

Thanks for listening!