Episode 044: Extinct and Back from the Brink

Posted on December 4, 2017 by strangeanimalspodcast

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Our episode this week is about some causes of extinction, but to keep from getting too depressing we’ll look at a lot of animals that were brought back from the brink of extinction by people who saw a problem in time to put it right. We’ll learn a lot about the passenger pigeon this week especially. Thanks to both Maureen and Emily for their suggestions! I didn’t mean to lean so heavily on North American animals in this episode–it just happened that way. I try to mix it up a little more than this ordinarily.

The passenger pigeon (stuffed):

The tiny black robin. It fights crime!

The Tecopa Pupfish is not happy about being extinct:

The West Virginia Northern Flying Squirrel SO CUTE:

This is what the Golden Lion Tamarin thinks about habitat destruction:

A rare Amur tiger dad hanging out with one of his cubs:

The Organization for Bat Conservation

Episode transcript:

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

This week we’re going to learn about how animals go extinct, with examples of lots of animals who’ve gone extinct and others that have been saved from extinction by human intervention. Both topics were suggestions by Maureen, who also suggested several of the animals I included. I could have kept adding to this episode until it was 24 hours long, but I had to stop somewhere, and now that I’m recording I realize there are aspects of extinction I didn’t address at all.

Extinction means that a population of life forms have all died. That sounds pretty definitive, but it’s also hard to know exactly when it’s happened for any given species. Sometimes you can look online and find the specific day that the very last animal of a species died. In the case of the passenger pigeon, that was September 1, 1914, when a captive bird called Martha was found dead in her cage. Martha had been kept in the Cincinnati Zoo long after the last wild passenger pigeon was shot around 1901. But we don’t know for sure that she was the very last passenger pigeon alive at that point. Passenger pigeons were spotted in the wild for years after Martha died.

The passenger pigeon looks similar to the mourning dove, which is a common and very pretty dove throughout most of North America, but it’s not all that closely related. The passenger pigeon was a swift and elegant flyer but was awkward on the ground. And while mourning doves have a soft, musical call, the passenger pigeon apparently didn’t sound very musical at all. Its calls were mostly loud, harsh clucks that were described as deafening when one of the massive flocks of birds took off in alarm.

So what caused the passenger pigeon to go extinct? As is often the case, it wasn’t just one thing. We’ll come back to the passenger pigeon later, but for now let’s discuss one rather unusual cause that contributed to its extinction.

The passenger pigeon was famous for its numbers. There may have been as many as five billion birds alive at any given time, in flocks that numbered millions of birds each. I’m not exaggerating, either. A single flock could take an entire day to fully pass overhead and literally darkened the sky, there were so many individual birds. With so many birds, it wasn’t that hard for hawks and other hunting birds to catch as many pigeons as they could eat—but there are only so many hawks, and millions upon millions of pigeons. The passenger pigeon also nested in a relatively small area within its eastern North American range. Its nesting colonies were so huge they were called cities. A female laid one or two eggs, which both parents incubated. Sometimes there were so many pigeons in a tree that limbs would break off. By the end of nesting season, pigeon poop underneath roosts could be as deep as a foot, or 30 cm.

And while millions of adult birds were tending millions of eggs and babies, predators gorged themselves on pigeon. Hawks, eagles, owls, and other birds of prey naturally caught lots of pigeons, but other animals moved in to take advantage of the buffet. Bears, foxes, wolves, mountain lions, and smaller animals like possums and raccoons would all eat as much pigeon as they could catch. But there were so many birds that there literally weren’t enough predators to make a dent in the population before the babies could fly and the flocks left the nesting grounds for another year. I mean, birds sometimes just laid their eggs directly on the ground. They were not very hard to catch.

The problem was that once the passenger pigeon’s numbers fell due to other factors, the predators’ yearly glut of pigeon eating started making a difference. The once enormous flocks grew smaller and smaller. And since the passenger pigeon was adapted to thrive in huge colonies, where individuals worked together to gather food and feed babies communally, once the flocks dropped below a certain number, the birds weren’t able to raise their young effectively.

This is depressing, so let’s cleanse the palate with a bird that was saved from certain extinction not too long ago. There are actually a number of species I could have chosen, but I decided on the black robin because it’s tiny, jet black, and has a name that sounds like an alternate-universe DC comic book character.

When I say robin, my North American listeners think of a big thrush-type bird that always looks like it’s frowning, and my European listeners think of a tiny round ball of floof. The black robin is the round ball of floof type, but it’s not from Europe. It’s found only on a few small islands off the coast of New Zealand—really small islands. In 1980, the entire population of black robins lived on Little Mangere Island, which is 279 acres in size, or 113 hectares. Of course, the entire population of black robins in 1980 was five individuals, only one of which was a female. That bird was called Old Blue, and she basically saved her species. A team of conservationists led by Don Merton established a breeding program and today there are more than 250 of the birds.

The black robin was almost driven extinct mainly by introduced predators like cats, rats, and dogs. That’s a common problem, especially in island habitats. Like the dodo, the black robin had never had to deal with mammals that wanted to eat it. It isn’t entirely flightless but it spends most of its time on the ground, digging through brush and dead leaves for insects, and isn’t a very strong flier.

Habitat loss is another huge cause of extinction, and if I wanted to spend all year on this one topic I could. But I won’t, because that would be really grim and not fun at all. One of the factors contributing to the passenger pigeon’s extinction was habitat loss. It mainly ate acorns and small nuts, insects, and seeds found in forests, and when European settlers decided they wanted to turn huge sections of North American woodland into farms and towns, the passenger pigeon soon didn’t have enough forested areas to sustain its massive population. It would have had a hard time as a result even if all other factors had been in its favor.

Habitat loss doesn’t just mean cutting down trees. It can mean polluting a river, bottom dredging in the ocean, diverting water to farmland, and filling in wetlands. It also isn’t always caused by humans. Natural causes like forest fires and volcanoes can lead to habitat loss and extinctions. And many of the dinosaurs, of course, were killed off by a massive meteor impact and its long-term repercussions on climate.

I could choose any of literally thousands of examples of animals that went extinct due to habitat loss, but here’s just one. I mainly chose it because it has a cute name. The Tecopa pupfish was an awesome little fish that lived in California, specifically in the Mojave desert, which is not a place you’d ordinarily expect to find any fish. There are hot springs in the Mojave, though, and the pupfish lived happily in water that was 110 degrees F, or 43 C, or even a little warmer. That’s the temperature of a comfortably warm bath. It ate algae but it also gobbled up mosquito larvae, and it was only about an inch and a half in length, or 4 cm. It didn’t live in the actual hot springs pools, which were too hot, but in a pair of outflows, basically streams that flowed away from the pool down to the Amargosa River.

The problem is, humans really like hot springs. In the 1950s and 60s, people flocked to the Tecopa Hot Springs to soak in the water. Bathhouses were built, the hot springs pools were enlarged, and in 1965, both outflows from the springs were diverted into a single newly dug channel. After that, the water flowed faster. That meant it remained too hot for the pupfish unless the fish moved downstream, and when it moved downstream to where it was comfortable, it had to compete with another subspecies of pupfish, the Amargosa River pupfish. It also had to compete with introduced species of fish.

By 1966, almost no Tecopa pupfish remained. In 1970 it was put on the endangered species list, but by then it was far too late. By 1972 there were no Tecopa pupfish.

Oh my gosh, that’s so depressing. I need another success story. The West Virginia Northern Flying Squirrel is an adorable and fascinating rodent, a subspecies of the more common northern flying squirrel, but it lives only in the highest elevations of the central Appalachian Mountains. During the ice ages, it was isolated from other flying squirrel populations by glaciers and developed separately. It has a broad, flat tail and loose folds of skin that connect its forelegs to its hind legs along its sides. When it jumps from a branch, it holds its legs out to pull the skin folds taut, which allows it to glide through the air.

But it almost died out completely due to industrial logging. By 1985, only ten individuals were found in four different areas of its range. It was listed as a protected species in 1985, and that together with the conservancy of its mountaintop habitats, allowed it to increase to a small but healthy population today.

The West Virginia Northern Flying Squirrel was lucky because its habitat became protected and started to recover from heavy logging, so the flying squirrels were able to stay put and lead their ordinary squirrelly lives. Other species aren’t as fortunate. The Golden Lion Tamarin, for instance, has been snatched from the jaws of certain death but still faces an uphill battle due to habitat destruction.

The golden lion tamarin is a monkey native to the coastal forests of Brazil. It’s a gorgeous monkey with golden-orange fur that grows long around the face so it looks like a lion’s mane. The golden lion tamarin is only around 10 inches long, or 25 cm, not counting its long tail, and it lives in trees where it runs and leaps and climbs a lot like a big golden squirrel.

The problem, of course, is that the Atlantic Forest of Brazil keeps getting cut down. What used to be nearly unbroken forest that stretched for thousands of miles has now shrunk to only around 8% of its original size, and it’s in little bits and pieces widely separated from each other. By 1969, there were only 150 tamarins left.

Fortunately for everyone, especially the tamarins, an aggressive conservation program was well underway by 1984. Zoos throughout the world started breeding golden tamarins for reintroduction into protected wilderness in Brazil. As it happens, while I was still researching this episode, I got an email from a listener that is just so perfect, I have to share it. Emily wrote,

“I used to volunteer at the zoo and I was in charge of making sure the Golden Lion Tamarin monkeys didn’t escape their habitat. There were no fences around it, since they were trying to simulate natural conditions enough so that they could eventually be released back into the jungle. So my job was to walk around the enclosure and shoot them with a water gun. It was set on “very soft.” Just a gentle aquatic nudge to get back in the tree! They were tiny, luxurious creatures and I hated it when my scheduled changed and I had to stop volunteering.”

I love this so much. Thank you, Emily, for sharing the story with me and agreeing to let me use it on the show. I feel like I should pause for a moment so everyone listening can just imagine how awesome it would be to walk around spritzing beautiful little monkeys with water.

Anyway, the population of golden lion tamarins is now over 3,000. And even better, the Brazilian government has made an effort to develop protected wilderness corridors connecting what used to be separate sections of forest. This will help not just the tamarins but lots of other animals too.

Now I feel great. But we’re not done talking about causes of extinction, and unfortunately we’ve reached the worst part: overhunting by humans.

That was the main cause of extinction for the passenger pigeon. People would just shoot up into the air at the seemingly endless flocks of birds. They didn’t even have to aim. Every shot would bring down a rain of dead and injured birds. Almost no one imagined the passenger pigeon could possibly go extinct—there were just too many of them. Even when the flocks were noticeably smaller and the birds’ range had shifted away from the more populated eastern states, professional hunters and trappers continued to follow the flocks and kill as many birds as possible. The dead pigeons were shipped by train to big cities as cheap meat—so cheap that by 1876 it actually cost more to ship a barrel of pigeons on ice than it cost to buy the pigeons when they arrived. By 1878, only one large nesting site remained—and 50,000 pigeons were killed there every single day. No babies survived from that nesting and the surviving adults were killed when they tried to start new nests in another area.

It was senseless. It makes me so mad. But while the passenger pigeon was a great big lesson on how quickly a species can be driven to extinction from an enormous, thriving population, it happens on a smaller scale all the time.

The Caribbean Monk Seal, sometimes called the wolf seal, grew to about 8 feet in length, or 2.5 meters, and had sleek dark gray fur that sometimes looked greenish due to algae growing on it. They were curious, friendly animals that didn’t fear humans, and you can see where this is going. The first European to see the Caribbean monk seal was Christopher Columbus, whose men killed eight seals. The next European to see the Caribbean monk seal was Ponce de Leon, whose men killed 14 seals. Things didn’t get any better from then on.

Seals provided oil from their fat, much like oil made from whale blubber. It could be used to grease machinery or burn in lamps—remember, this was before petroleum products and electricity. Hunting the seals for oil, meat, and skins wasn’t the only problem, though. Conservation back in the 19^th century wasn’t all that great. Scientific expeditions usually just killed as many animals as they could find, because that was how they were studied. In only four days, an 1886 expedition specifically made to study seals killed 42 animals and captured a newly born pup that died a week later.

The Caribbean monk seal held on for decades despite the slaughter, but the last one was spotted in 1952 and that was it. Not only were the seals hunted nearly to extinction, the fish and crabs the seals ate were also overhunted. What seals remained had almost nothing to eat and frequently starved to death.

We need a big success story after that one. Let’s talk about the California condor.

The California condor is an enormous bird with a wingspan ten feet wide, or over 3 meters. It’s a scavenger so it looks superficially like a vulture, with a bald head. Its feathers are black with white patches under the wings, and it has a floof of feathers around its neck that looks precisely like it’s wearing a really fancy opera cape. By 1987, the entire world population of the California condor was 27 birds. And those 27 birds were not going to survive long without help. Poaching and habitat loss had almost wiped them out, along with poisoning from lead bullets—the birds would eat the bullets frequently left in the discarded guts after a hunter field dressed a kill.

So all 27 birds were captured and placed into a breeding program, although only 14 birds were able to breed. By 1991 there were enough condors that individuals started to be released into the wild again. Currently there are almost 450 birds total.

Fortunately, in 2019 California hunters will no longer be allowed to use lead bullets at all, and a lot of hunters have already started using lead-free ammunition. This will allow more condors to be released in areas of California where they used to live but were hunted to extinction over a century ago. Lead poisoning is a big problem for all scavengers, including bald eagles.

Our last success story is the Amur tiger, also called the Siberian tiger. It had a lot of names in the past because its range was so large, from Korea to northeastern China, eastern Mongolia, and parts of Russia. It’s a big tiger, as big as the Bengal tiger in the past although the remaining population of Amur tigers is overall smaller than Bengal tigers today. Its head is broad, with a skull similar to a lion’s. Its coat color and markings vary considerably, and its winter coat grows very long and shaggy.

The Amur tiger was already under pressure from hunting and habitat loss when the Russian Civil War broke out in 1917. Tigers were either killed by accident during the fighting, or killed by soldiers on patrol, almost wiping out what animals remained. And after that, tiger hunting wasn’t prohibited until 1947, at which time only a few dozen tigers were left.

Fortunately, it survived. In 2007 the Russian government even set aside a national park just for the Amur tiger. No human activity is allowed in most of the park and tiger numbers are climbing. In 2015, a logging company agreed to dismantle abandoned logging roads so they couldn’t be used by poachers. Bridges were removed, trenches dug, and some areas were simply bulldozed so that vehicles can’t get through. That’s the same year that camera traps got rare photos of an adult Amur tiger male, a female, and three cubs. Since male tigers are usually solitary, that was pretty awesome.

Genetically the Amur tiger is very similar to the extinct Caspian tiger. There’s a possibility that as the Amur tiger’s population grows, it could be reintroduced to parts of Asia where the Caspian tiger once lived.

That brings me to something I meant to mention in last week’s episode. If you listened to the recent Relic: The Lost Treasure podcast episode where I was a guest, you heard me absolutely mangle an explanation of what a subspecies is. So here’s my attempt to clarify what I was trying to say. A subspecies develops when an animal population becomes isolated from the rest of the population for long enough to start evolving in different ways from the parent population. A subspecies can still produce fertile offspring with the parent species and other subspecies of the same species, and may look almost the same, but on a molecular level it’s different enough that if given enough time, it will continue to develop into a different species.

It’s a complicated topic and I said the word species too many times. But hopefully that gives you an idea. Technically humans are a subspecies of Homo sapiens, by the way. Our official scientific name is Homo sapiens sapiens. The extra sapiens indicates that we’re a subspecies and that we’re extra smart, because sapiens means intelligent. All tigers are subspecies of the species Panthera tigris, and the Bengal tiger is called Panthera tigris tigris, because I guess they’re extra tigery.

Anyway, it’s important to remember that while a subspecies may look almost identical to the parent species, it’s developing in different ways due to different evolutionary pressures in its specific habitat. The dodo’s ancestor was a type of pigeon that decided to stay on the island of Mauritius. It probably continued to look like a pigeon for a long time before its evolutionary changes started to show. It’s easy to think that a subspecies going extinct isn’t as important as a full species going extinct, but that’s not the case.

Thinking about extinction can make us feel angry and helpless. But there are lots of things you can do to help, simple things like picking up trash when you’re out hiking, remembering to bring your reusable bags into the grocery store, and using a refillable water bottle instead of buying a new plastic bottle of water. If you have some extra money, there are lots of good conservation organizations that can use a donation. One I try to donate to every year is the Organization for Bat Conservation. I’ll put a link to it in the show notes if you’re interested. If you don’t have extra money but can donate your time to a local organization, that’s just as good. Although you probably won’t be lucky enough to get to spritz monkeys gently with water.

You can find Strange Animals Podcast online at strangeanimalspodcast.com. We’re on Twitter at strangebeasties and have a facebook page at facebook.com/strangeanimalspodcast. If you have questions, comments, or suggestions for future episodes, email us at strangeanimalspodcast@gmail.com. If you like the podcast and want to help us out, leave us a rating and review on iTunes or whatever platform you listen on. We also have a Patreon if you’d like to support us that way.

Thanks for listening!

Episode 036: Patagonian giants, Yowie, and Bunyip (Bigfoot part 2)

Posted on October 9, 2017 by strangeanimalspodcast

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Part two of the Bigfoot episode sort of got away from me. We start with giants of Patagonia and end up, inexplicably, with seals in Australia. But it’s a fun ride along the way, where we learn about real giants in Patagonia, folkloric giants in Patagonia, the Yowie of Australia, and the Bunyip of Australia. And Southern elephant seals.

Some map giants:

Yowie candy, because it’s getting close to Halloween:

A drawing of the bunyip geoglyph:

A map showing where the geoglyph was located. Old maps are neat:

The southern elephant seal. Look at that magnificent snoot!

Further reading:

Monsters of Patagonia by Austin Whittall

“What to make of the Yowie?” By Darren Naish

“Buckley’s Bunyip” by Paul Michael Donovan, in The Journal of Cryptozoology, Vol. 4 (Dec 2016)

Further listening:

The Folklore Podcast December 15 2016 episode “Bunyip: Devil of the Riverbed”

Show transcript:

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

We’re one week closer to Halloween and deep in monster lore. Last week we learned about the Yeti. This week we’re going to learn about bigfoot-type legends from other parts of the world—specifically, Patagonia and Australia.

Patagonia isn’t a country but a region at the southern tip of South America. Part of it is in Chile, part in Argentina. It includes the Andes Mountains, and the southern end is only 600 miles from Antarctica. People have lived in the area for at least 13,000 years and there are many different indigenous cultures still living there today.

Much of South America was originally populated by the little-known Clovis People, who migrated into the Americas from Asia once the glaciers retreated from Alaska. The Clovis People are supposed to have arrived around 13,000 years ago, but archaeologists have dated some non-Clovis sites in both North and South America to much earlier than that. One theory is that an earlier human migration reached South America by sea from the South Pacific, although this is controversial. DNA studies of First Nations people suggest that there may have been an earlier migration from Asia into North America, possibly 20,000 years ago, before the Clovis People arrived.

The first Europeans to visit Patagonia were Magellan and his crew on their voyage around the world. They spent the winter in Patagonia in 1520, and Magellan is the one who named the area. Specifically, he named its people Patagons, and reported that they were giants.

Antonio Pigafetta was one of only 18 survivors of the expedition. When he got home, he wrote about his adventures. He described the Patagons as nine to twelve feet tall, or 2 and three-quarters to over 3 and a half meters tall.

Soon everyone in Europe knew Patagonia was the land of giants. Maps of the region included illustrations of bearded men nearly twice as tall as the explorers greeting them. It would be easy to dismiss the accounts of giants as inventions to sell a few books, except that other explorers were reporting the same thing.

A priest from a Spanish expedition reported that in 1525 he saw native men who were 13 spans tall, or 9 feet, or 2.75 meters. In 1577 Sir Francis Drake visited Patagonia, and later his chaplain reported seeing giants 5 cubits tall, or 7 ½ feet, or 2.3 meters. In 1579 another Spanish expedition started a short-lived settlement in the Strait of Magellan, which ended up being renamed Port Famine, and maybe they wouldn’t have starved if they hadn’t started off by killing one of the giant locals. According to the expedition leader, Pedro Sarmiento de Gamboa, it took ten men to capture the native. Only one settler survived the bitter winters and lack of provisions. He was rescued by an Englishman, Sir Thomas Cavendish, who didn’t see any giants but did see footprints he reported as 18” long, or almost 46 centimeters.

The reports of giants continued, in 1591, 1599, 1614, 1641, and so on well into the 18^th century. In 1615 two men dug up some stone cairns and underneath found human skeletons they said were ten or eleven feet long, or a bit over 3 meters. In 1642 Dutch admiral Henry Brewer reported more 18” footsteps in Tierra del Fuego.

All this sounds definitive. But other expeditions didn’t report seeing giants, including those from 1535, 1540, a land exploration from 1557 to 1559, 1618, another land expedition from 1623 to 1624, 1670, and so on. Tellingly, after a 1741 shipwreck on the southern Chilean coast, a survivor, John Bulkeley, claimed he encountered gigantic men in the area—but Thomas Pascoe, a member of the same fleet, disagreed. He said the people in the area were average-sized—and, incidentally, not wild cannibals as Bulkeley claimed. Pascoe called them “harmless, civil, and inoffensive.”

So what’s going on? Are all these people, hundreds of sailors, soldiers, priests, and even naturalists, from different eras and nations, all liars?

In 1767, Captain Samuel Wallis, apparently fed up with the conflicting reports about giants, sailed to Patagonia with a measuring rod. There he measured some very tall people, for sure, but not giants. The tallest man he measured was 6 feet 7 inches, or 2.01 meters, with several others only an inch or two shorter. But, he reported, most were between 5 feet 10 inches and six feet tall, or 1.78 to 1.83 meters. And their feet, he mentioned, were quite small.

Several subsequent European measuring expeditions revealed the same proportions among the Tehuelche, a large and varied group of nomadic people who lived throughout Patagonia. The Tehuelche were among the tallest people in the world. Since the average height of a northern European in the 16^th century was 5’ 6” or 1.67 meters, and the average height of a southern European was only 5 feet or 1.5 meters, a group of people whose average height was 6’1” or 1.86 meters would seem like giants. The rest was likely due to exaggeration.

The Tehuelche were almost completely destroyed in the late 19^th century, and those who survived warfare and introduced diseases were mostly absorbed into other groups. Only about 6,000 Tehuelche remain scattered across South America.

But were the Tehuelche the only so-called giants in Patagonia? Various Europeans reported another group called the Tiremenen or the Caucauhue, who were not just tall, but stout and muscular mountain people last seen around the 1700s. They were supposedly bigger than the Tehuelche, warlike and dangerous. According to various stories, the Tehuelche finally killed the last of them after a fierce battle. Survivors of the battle took refuge in a cave, where the Tehuelche lit fires and asphyxiated them with thick smoke.

So far, all these giants are people, not furry Bigfoots. But there are plenty of stories from various indigenous groups of wild men and monsters in Patagonia, especially in the forests and mountains. According to the Alakuf, the Mwono was a snow man that lived among the glaciers and high mountains and left tracks in the snow. Over a thousand miles north, or 2,000 km, the Mapuche told a similar story. The Carcancho were hairy solitary men who lived in the mountains. They could stand almost 7 feet tall, or over 2 meters, and left large footprints in the snow. The Mapuche also believed that a giant with fiery red hair and beard, called a Trauko, lived along the Collón Curá River.

While the Mapuche people have lived in what is now Chile and Argentina for some 2500 years, they differ genetically from other indigenous peoples of Patagonia. When they moved into Patagonia, they conquered and absorbed many other tribes, and it’s possible many of their stories of the olden days come from those tribes. They say that giant animals once lived in the area but that their ancestors killed most of them, along with the evil giants that once lived there too. It’s hard not to speculate that the giant animals were megafauna like giant ground sloths. But all the people who migrated to the Americas were humans—no Neandertals or other of our relations made it there as far as we know—and until humans arrived, there were no members of the ape family in the Americas.

So what about other primates? Researchers aren’t sure how monkeys made it to South America, but they’ve been there for some 37 million years. They lived first in the Amazon basin and spread slowly throughout South and Central America. But there are no species of monkey in Patagonia and there hasn’t been for millions of years. The few species of monkey that had spread into Patagonia had already gone extinct long before our first human ancestor started walking upright, so it’s not likely that the first human settlers of Patagonia encountered monkeys. Of course, you never know what fossils might come to light in the future, and there are scattered stories about tribes of men with tails in Patagonia.

In his marvelous book The Monsters of Patagonia, author Austin Whittall suggests that the Patagonian wild man legends, as well as other story elements, may be connected to Australian Aboriginal legends. If the original settlers of Patagonia did arrive by sea from Austronesia, which is by no means established, they would have adapted their stories to their new home. Whittall also suggests that one story in particular may be related to Homo erectus, our direct human ancestor who probably went extinct when humans began competing with them for resources. The ancestors of the Australian Aborigines probably did encounter Homo erectus. Maybe that was the source of the Yowie legend.

I probably don’t need to point out that this is fringey, fringey stuff. But it’s fun to think about.

The Yowie in Australian Aboriginal lore is a man-like monster that’s seven or even as much as 12 feet tall, or around 2 to 3 and a half meters. It has big feet, although some stories say its feet are backwards so people tracking it are actually going the wrong way. Sometimes the Yowie is said to have long white hair. Modern interpretations of the Yowie are a lot like the Sasquatch, with brown or reddish hair all over and arms that hang to its knees.

Many older accounts by European settlers refer to this creature by various other names, including wood devil, Australian gorilla, and Yahoo. I don’t know if Yahoo was an attempt at pronouncing an unfamiliar Aboriginal word or if 19^th century pop culture was still drawing on Swift’s Gulliver’s Travels. In Swift’s story, yahoos are brutish but human-like creatures much despised by the narrator, who prefers the company of the intelligent horses that treat the yahoos as servants. Oh, the satire was subtle back in 1726.

These days, the Yowie is as firmly entrenched in Australian culture as Sasquatch is in North American culture. Yowies sell chocolates and toys, appear in cartoons, and like Sasquatch hunters, Yowie hunters run around in the Australian bush and make plaster casts of big footprints.

Let me tell you something important about plaster. It’s a terrible way to make casts of footprints or anything else. Not only does it produce tiny ridges along its edges as it dries, which have been interpreted as dermal ridges of bigfoot feet, it also generates heat as it dries, which has the potential to alter the prints it’s supposed to be faithfully representing. These days, field scientists use dental stone or latex to take casts. Plaster is cheap and readily available, but that doesn’t mean it’s the best.

Anyway, the earliest colonial reports of the Yowie are from around the early 19^th century. European settlers sometimes treated the Yowie as a real animal that had yet to be discovered, sometimes as an amusing Aboriginal superstition. Reported Yowie sightings were relatively uncommon until the 1970s. At that point, cryptozoologist Rex Gilroy, whom I disparaged in episode 32 for being secretive about his findings and data, started showing up in the Australian media with big plaster casts of what he claimed were Yowie tracks.

The problem with the Yowie is that Australia, even less so than Patagonia, has never been home to any animal that stands upright the way humans do. Most of Australia’s large mammals are marsupials so they aren’t even remotely related to apes.

It’s possible that the Aboriginal tales of the Yowie are old, old memories of Homo erectus or other human relatives, as I suggested about the Patagonian wild men. But it’s also possible that the Yowie is a monster of human imagination. Cultures from around the world have stories of big people and little people who sometimes help, sometimes cause mischief, or are sometimes just plain menacing. It seems to be a human trait to people the landscape with giants and dwarves.

The more research I do about any cryptid, as opposed to animals we know exist or used to exist, the more I realize cryptozoology is actually about people. It’s the study not so much of unknown animals, it’s the study of how humans interact with the unknown. Sometimes I’m disappointed when I trace a fascinating story back to its primary source and discover it’s not as mysterious as later versions of the event make it out to be. But sometimes I come across something so purely human that I don’t even care that the mystery has evaporated.

So let me tell you about the Bunyip. This is another Australian monster, one that sometimes gets confused with the Yowie in popular culture, or sometimes gets lumped in with lake monsters. I learned about this from an article by Paul Michael Donovan in the 2016 Journal of Cryptozoology, called “Buckley’s Bunyip.” Shortly after I read the article, I happened to listen to the “Bunyip: Devil of the Riverbed” episode of the Folklore Podcast. That episode was an interview with none other than Paul Michael Donovan about the same material his article covered, so if you want more information, check the show notes for a link to that episode.

The bunyip is supposed to be a monster that attacks and eats people who come too near the waterholes or lagoons where it lives. Descriptions vary, but it’s sometimes said to be gray and covered with feathers, with a peculiar two-tone bellow that it uses to warn people away. By about the 1850s the word bunyip had been adopted into Australian English as a term meaning something like humbug or poser.

There was an Aboriginal sacred site near Ararat, Victoria where the outline of a bunyip was carved into the ground and the turf removed from within the figure. Every year the local indigenous people would gather to re-carve the figure so it wouldn’t become overgrown, because it symbolized an important event. At that spot, two brothers had been attacked by a bunyip. It killed one of the men and the other speared the bunyip and killed it. When he brought his family and others back to retrieve his brother’s body, they traced around the bunyip.

The bunyip carving is long gone, since eventually the last Aborigine who was part of the ritual died sometime in the 1850s and the site was fenced off for cattle grazing. But we have a drawing of the geoglyph from 1867. A copy of it is in the show notes. It’s generally taken to be a two-legged sea serpent type monster with a small head and a relatively short, thick tail. Some people think it represents a bird like an emu.

But if you turn it around, with the small head being the end of a tail, and the blunt tail being a head, suddenly it makes sense. It’s the shape of a seal.

The Southern elephant seal lives around the Antarctic, but it is a rare visitor to Australia. It’s also enormous, twice the size of a walrus, six or seven times heavier than a Polar bear. The males can grow over 20 feet long, or over six meters, while females are typically about half that length. The male also has an inflatable proboscis with which it makes horrible roaring sounds. This is a clip of what it sounds like, although these calls are from Northern elephant seals, which are much smaller than Southern elephant seals. Still pretty darn big, though.

[seals honking]

The elephant seal is also an aggressive carnivore. If an elephant seal strayed inland up a river or stream, which does sometimes happen, the Aboriginal people of the area would definitely take notice of the monster.

So the bunyip is, in the end, a true monster. And the bunyip’s story is a deeply human one. A man’s brother died. His family mourned, and commemorated the event with a carving that withstood who knows how many years. Oh, and the carving’s size? It was about eight meters long. That’s 26 feet.

I’m not entirely sure how I ended up talking about seals when we started out talking about giants of Patagonia. But hey, the southern elephant seal lives in Patagonia too.

I could easily do two or three more episodes about bigfoots around the world, but I’m ready for something else. Next week we’ll learn about a four-footed monster from Ireland, a Halloween story if I ever heard one since it starts with a gravestone.

Thanks for listening!

Episode 023: Nonhuman Musicians

Posted on July 10, 2017 by strangeanimalspodcast

Podcast: Play in new window | Download (Duration: 12:19 — 12.9MB)

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This week’s episode is about nonhuman musicians. It’s rarer than you’d think.

The palm cockatoo. Nature’s drummer. In possibly related news, I know what my next tattoo is going to be.

Snowball the Dancing Cockatoo.

Members of the Thai Elephant Orchestra at the Thai Elephant Conservation Center:

Further reading:

Kinship with Animals by Dave Soldier

Show transcript:

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

This week’s episode about nonhuman musicians was inspired by an article about palm cockatoos. The male cockatoos drum on tree trunks or hollow logs as part of their courtship display, which doesn’t sound all that unusual until you learn that they use special crafted sticks to drum. A male will select a stick, trim it down the way he wants it, and hold it in his claw to drum. Sometimes he’ll use a hard seedpod instead. The resulting beats are not only consistently in rhythm, each individual has a personal style. Some drum quickly, some slowly, some throw in little flourishes. Sometimes females will drum too, and if a female likes a male’s drumming, she may imitate him or join in.

Here’s a little clip of a male drumming. He’s also whistling.

[palm cockatoo drumming]

The palm cockatoo is an awesome-looking bird. It looks like a drummer. It’s up to two feet long, or 61 cm, smoky gray or gray-black with a heavy gray beak, red cheek patches that flush when the bird is upset or excited, and a messy crest of feathers. It’s native to Papua New Guinea, Indonesia, and the very northern tip of Australia, Cape York Peninsula. Only the Australian birds are known to drum. Unfortunately, the Australian birds are the ones most threatened in the wild due to habitat loss.

The palm cockatoo eats nuts and seeds, and like all parrots it can live a long time. And yes, you can get them as pets—and now I’m desperate for one even though the last thing I need is a pet cockatoo. I have a coworker with a pet parrot who she says is incredibly neurotic. He tends to get overexcited and starts screaming, and she has to put him in his cage and cover it so he’ll shut up. Her kids found the parrot when they were young. He plopped down in her yard when they were playing outside, and they put an empty laundry basket over him to trap him. No one claimed him, so my coworker has now been stuck with a neurotic parrot for over twenty years. She’s pretty sure he survived in the wild by hanging out with crows, because one of the things that will set off his excited screaming is hearing crows outside. And while cockatoos and parrots in general are typically affectionate and make good pets, palm cockatoos are not. They’re considered “difficult.” When parrot fanciers call a type of bird difficult, it’s difficult.

Anyway, the really unusual thing about the palm cockatoo’s drumming isn’t its tool use, which is well known among many types of birds, especially parrots and their relations. It’s the rhythm.

Most animals can’t keep a beat. Synchronization to an external rhythm is called rhythmic entrainment. Humans are really good at it and recognize a beat automatically, but responding in time to a rhythm is a learned skill. Small children have to learn to keep a beat by moving their bodies, speaking, or singing, and they learn it best in social settings. That’s why music, dance, and rhythmic play activities are so important to preschool children. And as a drummer myself, I promise you, humans of any age can learn to improve their rhythm.

But most animals don’t seem to have the ability to distinguish rhythmic beats, although it hasn’t been studied all that much until fairly recently. Some researchers think it may have something to do with the ability to mimic vocal sounds.

That would explain why many birds show rhythmic entrainment, varying from species to species. A sulfur-crested cockatoo named Snowball was internet-famous for a while in clips where the bird danced to music. As a result, Snowball became the subject of a rhythmic entrainment study that shows he can adapt his dancing to changing tempos.

But not all animals who show rhythmic entrainment can mimic vocally. California sea lions aren’t exactly the parrots of the sea animal world, but they can be trained to move to a beat. On the other hand, closely related seals are vocal learners. In fact, one famous harbor seal who was raised by a fisherman who found the orphaned pup could imitate the fisherman so well he was known as “Hoover the Talking Seal.”

Here’s the only clip I would find of Hoover. The first time I listened to it, I couldn’t figure out when the seal was talking. All I could hear was some gruff-sounding guy talking really fast. Well, that’s Hoover.

[Hoover the talking seal]

That is Hoover the talking seal talking. It’s creepy as heck.

It’s possible that sea lions still retain neural pathways that allow vocal mimicking even if they no longer use them. Then again, some researchers now believe that vocal mimicking ability may only be a skill related to rhythmic entrainment, not the source of the ability, and that the neural pathways for rhythmic entrainment may be very old. Some species can express entrainment, others appear to have lost it.

Studies on human brains show that when music plays, pretty much the entire brain lights up in response. That’s because we have special neural connections that help coordinate motor planning, speech, and other skills with the perceived beat. Brains of parrots and other birds are very similar. But monkeys are not. Monkeys can’t dance. Poor monkeys.

One study with rhesus monkeys who were trained to tap in rhythm with a metronome determined that they couldn’t anticipate the beat but could tap just after it, responding to it, even after years of training. Many rhythmic entrainment studies focus on great apes, since it’s reasonable to suppose that humans’ close cousins might share our rhythmic ability.

Patricia Grey, a bio-music researcher at the University of North Carolina at Greensboro, taught a group of captive bonobo apes to play a drum along with a beat. But it wasn’t as simple as showing a bonobo how a drum worked and seeing if it could keep a beat. She had to encourage the apes in a social setting, just like with human children. Also, she had to design a drum that could take a whole lot of abuse. I love that she went to Remo, a company that manufactures drums and drumheads, to have the drum made.

Her experiment started by accident. In 2010, Grey was at the Great Ape Research Center in Des Moines waiting for an experiment to be set up, and while she waited she idly tapped the glass on the bonobo enclosure. A bonobo named Kanzi came over and tapped her hand on the glass in response, matching Grey’s tempo. Intrigued, Grey continued tapping to see how long Kanzi would keep it up. Kanzi didn’t stop, even when her snack time came. She ate her snack lying on her back so she could continue to tap with her feet.

Wild chimpanzees and bonobos drum on logs and their own bodies to make rhythmic noise during play and dominance activities. Dominant male chimps do a particularly exaggerated slow display when thunderstorms approach, called a rain dance by researchers, that involves drumming. A variation of the rain dance has been seen when wildfires are approaching a troupe of chimps. Naturally it’s called a fire dance, and it includes a vocalization heard at no other time.

Chimps are pretty chill when it comes to fire, by the way. They understand how it spreads and how to avoid it without panicking.

Another animal that can keep the beat? Elephants! Asian elephants are vocal mimics and their ability to keep a beat is extremely precise. In 2000, the Thai Elephant Orchestra was created with elephants at a conservation center in Thailand, who learned to play oversized versions of traditional Thai percussion instruments.

The elephants learned the instruments easily, taking to it so quickly and so well that the orchestra’s founders were astonished. The great thing is, the elephants actually create much of the music themselves. The orchestra’s founders, neuroscientist Dave Soldier and elephant conservationist Richard Lair, wanted the elephants to have fun and enjoy making music. So for most songs, the animals are only signaled when to start and stop playing. Occasionally human musicians play along.

The orchestra released three albums between 2002 and 2011, which were all well received—not as novelty albums, but as actual improvisational compositions. Some of the songs are arranged, with the elephants trained to play traditional Thai music. The orchestra performs live for visitors at the conservation center.

The orchestra varies in size from five to fourteen elephants. One particularly talented drummer, Luk Kop, could play three drums at the same time and set up complex rhythms. Unfortunately he was also a dangerous elephant, and that’s not good for a band or an elephant orchestra, so he had to drop out.

The elephants prefer non-dissonant tones and learn to strike the properly resonant parts of their instruments without even being taught. The elephants at the center also enjoy playing harmonicas. The tip of an elephant’s trunk has a fingerlike projection, so an elephant can hold a harmonica and blow through it with its trunk. Soldier reports that one morning he arrived at the center early when the elephants were heading down to the river for their morning bath. Almost all the elephants had brought their harmonicas and were playing together as they walked.

Most of the elephants at the center are former logging animals, and many of their handlers, known as mahouts, once worked with them when they were logging. Mahouts traditionally sing to their elephants, which is supposed to keep them calm. So the elephants in the orchestra are familiar with traditional Thai music.

Locals who have heard the orchestra play say the music sounds like the music in Buddhist temples. Soldier, a musician and composer himself, transcribed an original elephant piece which was then played by a human orchestra in New York. The audience didn’t know it was composed by elephants. Some guesses as to who the composer might be included John Cage, Dvorak, and Charles Ives.

Whether or not you like improvisational Thai music played by elephants, or you think it’s just a stupid gimmick, it’s clear the elephants are having a lot of fun. Here’s a clip of some of their music recorded at the conservation center. That’s some mighty fine percussion for animals who don’t even have hands.

[elephant orchestra]

You can find Strange Animals Podcast online 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 and get twice-monthly bonus episodes for as little as one dollar a month.

Thanks for listening!