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What’s That Thing that Hangs Off a Turkey’s Face?

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That thing is a snood. And it's there to let the other turkeys know that its owner is kind of a big deal. 

When a male turkey—known as a tom—wants to mate, he faces two hurdles. One is his potential mates, the female turkeys (a.k.a., hens). In the realm of turkey mating, the hens wield the power of choice and the toms have to get their attention and win the opportunity to reproduce. Come mating season, a tom will strut around, gobble, puff out his chest, fan his tail, and drag his wings to attract the hens, who then pick which of the toms they’ll mate with.

The second problem for a tom looking for love is the other toms in the area. They’re all competing for the same limited number of hens. Sometimes a good mating display isn’t enough to win a mate, and toms will attack and fight each other to secure a hen. 

This is where the snood comes in. That goofy-looking piece of dangling flesh helps a tom both with choosy hens and with competition from rival males. Having a long snood almost always means that a hen will want to mate with him and that another tom will back down from a fight. 

Dudes and their snoods

When two toms are trying to establish dominance, they’ll size each other up. Then they'll either fight, or one will flee. 

In the late 1990s, Richard Buchholz, an animal behaviorist who focuses on turkeys, wanted to figure out which, if any, characteristics of a tom turkey could predict how they fare in dominance fights. That is, did bigger turkeys tend to win more scuffles? Did older ones? He also wanted to see if the turkeys used any of these predictive cues when sizing each other up. He looked at various characteristics of dominant toms that fight and win, and compared them to those of subordinate toms that lose fights or run from them. Of all the characteristics he looked at, only “relaxed snood length” seemed to be a reliable predictor of how a tom would do in bird-vs-bird combat. The dominant males, the ones who won fights and got a choice mate, had longer snoods. 

With that in mind, Buchholz looked at how toms reacted to other toms with snoods of varying sizes. The birds tended to avoid confrontation with other males with longer snoods, and wouldn’t even feed near them. A big snood, this suggests, says to the other turkeys that this is a tom you don’t want to tangle with. Buchholz noted that snood length correlates with age, body mass, and testosterone, so, to competitors, the snood could be a good indicator of a tom’s aggressiveness, age/experience, size, and overall condition and fighting ability.

In the snood for love

Once the males have established who’s going to have a chance to mate, the final choice goes to the hen. While the mating display is the main draw for getting a hen to check him out, a tom’s snood helps him out again here.

Like it did for the other males, a tom’s snood signals a lot of information to a female assessing potential mates—it indicates how old and how big he is, and even says something about his health. In another study, Buchholz found that longer-snooded toms carried fewer parasites. If a hen wanted to choose a mate with good genes that might help her offspring grow large, live long, and avoid parasites, a tom’s snood is a good advertisement for his genes. In that study, hens showed a clear preference for toms with longer snoods. In another experiment years later, Buchholz found that healthy hens again showed a strong preference for long snoods and that hens with their own parasite problems were less picky about snood length and checked out more potential mates—perhaps, Buchholz thinks, because the hens recognized their own susceptibility to infection and were willing to invest more time searching for a tom with genes for parasite resistance that would complement their own—but still showed some preference for longer ones. 

While a snood might look goofy to us, for a turkey, it’s integral to the mating game, signaling to other toms that they should get out of his way and letting hens know that he’s got what they’re looking for.

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Animals
20 Black-and-White Facts About Penguins
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To celebrate World Penguin Day (which is today, April 25), here are a few fun facts about these adorable tuxedoed birds.

1. All 17 species of penguins are found exclusively in the Southern Hemisphere.

2. Emperor Penguins are the tallest species, standing nearly 4 feet tall. The smallest is the Little Blue Penguin, which is only about 16 inches.

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3. The fastest species is the Gentoo Penguin, which can reach swimming speeds up to 22 mph.

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4. A penguin's striking coloring is a matter of camouflage; from above, its black back blends into the murky depths of the ocean. From below, its white belly is hidden against the bright surface.

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5. Fossils place the earliest penguin relative at some 60 million years ago, meaning an ancestor of the birds we see today survived the mass extinction of the dinosaurs.

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6. Penguins ingest a lot of seawater while hunting for fish, but a special gland behind their eyes—the supraorbital gland—filters out the saltwater from their blood stream. Penguins excrete it through their beaks, or by sneezing.

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7. Unlike most birds—which lose and replace a few feathers at a time—penguins molt all at once, spending two or three weeks land-bound as they undergo what is called the catastrophic molt.

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8. All but two species of penguins breed in large colonies of up to a thousand birds.

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9. It varies by species, but many penguins will mate with the same member of the opposite sex season after season.

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10. Similarly, most species are also loyal to their exact nesting site, often returning to the same rookery in which they were born.

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11. Some species create nests for their eggs out of pebbles and loose feathers. Emperor Penguins are an exception: They incubate a single egg each breeding season on the top of their feet. Under a loose fold of skin is a featherless area with a concentration of blood vessels that keeps the egg warm.

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12. In some species, it is the male penguin which incubates the eggs while females leave to hunt for weeks at a time. Because of this, pudgy males—with enough fat storage to survive weeks without eating—are most desirable.

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13. Penguin parents—both male and female—care for their young for several months until the chicks are strong enough to hunt for food on their own.

Penguins nest
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14. If a female Emperor Penguin's baby dies, she will often "kidnap" an unrelated chick.

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15. Despite their lack of visible ears, penguins have excellent hearing and rely on distinct calls to identify their mates when returning to the crowded breeding grounds.

16. The first published account of penguins comes from Antonio Pigafetta, who was aboard Ferdinand Magellan's first circumnavigation of the globe in 1520. They spotted the animals near what was probably Punta Tombo in Argentina. (He called them "strange geese.")

17. An earlier, anonymous diary entry from Vasco da Gama's 1497 voyage around the Cape of Good Hope makes mention of flightless birds as large as ducks.

18. Because they aren't used to danger from animals on solid ground, wild penguins exhibit no particular fear of human tourists.

19. Unlike most sea mammals—which rely on blubber to stay warm—penguins survive because their feathers trap a layer of warm air next to the skin that serves as insulation, especially when they start generating muscular heat by swimming around.

20. In the 16th century, the word penguin actually referred to great auks (scientific name: Pinguinus impennis), a now-extinct species that inhabited the seas around eastern Canada. When explorers traveled to the Southern Hemisphere, they saw black and white birds that resembled auks, and called them penguins.

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6 Myths About Animals, Debunked
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It’s easy to think we understand animals: They’re present in every part of our culture, from the movies we watch to the clichés we use. But the way a species functions in the wild is often worlds apart from a stereotype or cartoon. This gulf between misconceptions and reality is the theme of Lucy Cooke’s new book, The Truth About Animals.

"We have a habit of viewing the animal kingdom through the prism of our own existence, and that trips us up and obscures the truth,” Cooke, a zoologist and founder of the Sloth Appreciation Society, tells Mental Floss. “I think it's time we rebrand the animal kingdom according to facts and not sentimentality.”

As Cooke examines in her book, the real world is one in which pandas are virile lovers and sloths are master survivalists. These are just a few of the myths that were debunked in The Truth About Animals.

1. PANDAS HAVE LOW SEX DRIVES.

Pandas have long been blamed for their own precarious position in the animal kingdom. The species is in danger, some people claim, because pandas are reluctant to or just plain bad at copulating. If only they would get off their furry behinds and get it on, there would be more of them.

In The Truth About Animals, Cooke debunks this modern myth. Pandas have been living in the wild for 18 million years—long before humans swooped in to act as their savior—and that wouldn’t be the case without healthy sex habits. It’s true that pandas are difficult to breed in captivity, and the several failed attempts of zoos to produce a baby panda throughout the 20th century is likely what led to this stereotype. But the bears are much more responsive to members of the opposite sex in the wild. The female chooses who she mates with, moaning from high in a bamboo tree while several males on the ground compete for her attention. Once the bears have paired off, they can have sex over 40 times in one afternoon.

2. SLOTHS ARE LAZY.

Cooke was inspired to write her book by sloths, which she describes to Mental Floss as “highly successful, highly evolved” creatures. Not everyone agrees: More than perhaps any other animal, sloths have become synonymous with laziness and sluggishness, and today they’re held up as an example of evolutionary failure.

The reality is that sloths are much more impressive than their appearance suggests. They’ve been around since 64 million years ago—earlier than wooly mammoths and saber-toothed tigers—and they have their slow and steady nature to thank for their success. Sloths have a remarkably slow digestive system and a low-calorie diet, so they expend as little energy as possible, not out of laziness, but out of survival instinct. A sloth is awake for more than half the day, and when necessary it can scramble up a tree at speeds approaching 1 mph. It spends most of its day in a still, seemingly trancelike state, but it isn’t wasting its potential: It’s conserving energy so it can maintain its dominant spot in the evolutionary tree.

3. PENGUINS ARE LOYAL LOVERS.

Emperor penguins, the most famous of the bird group, are known for splitting parenting duties between mated pairs, with the father incubating the egg while the mother gathers food for her family. This has led some to praise penguins as the reflection of ideal, moral family dynamics in the animal kingdom, but these people should probably find a different analog. Though the parents of any given chick may raise their offspring together, penguins aren’t monogamous: 85 percent of emperor penguins find a new partner from one breeding season to the next. Penguins are also some of the only animals known to exchange goods for sex. Adélie penguins need rocks to build up their nests during warmer months when meltwater threatens their eggs. With no parenting duties to distract them, bachelor penguins end up collecting more stones than they need, so some females will sometimes trade a one-off sex session for one of their pebbles.

4. VULTURES STALK DYING PREY.

Watch enough survival movies and you’re bound to see a shot of a hungry vulture trailing behind the starving protagonist, waiting for them to lie down and die. The myth that vultures stalk their prey while it’s still alive and have the power to predict death is a persistent one, but that doesn’t make it accurate. The scavengers have no interest in living animals and will only seek out meat from dead and decaying corpses. Rather than reaper-like premonitions of mortality, turkey vultures and greater and lesser yellow-headed vultures use their noses to locate their meals. They join kiwis and kakapos on the small list of birds with highly-developed olfactory glands. Without a strong sense of smell, other New World vultures and all Old World vultures primarily rely on sight to find food. Some New World vultures like black vultures have adopted a different strategy: They'll follow turkey vultures to their prey, taking advantage of their sensitive noses.

5. ALL BATS ARE RABID BLOOD-SUCKERS.

Bats may be the animals most closely associated with the horror genre. They crave blood, so the myth goes, and though a bat latched onto your neck won’t be able to suck you dry, it will likely infect you with a nasty case of rabies.

According to Cooke, there are many problems with the statement above. Bats are poor stand-ins for their fictional vampire counterparts; only three species of bats drink blood—the common vampire bat, the hairy-legged vampire bat, and the white-winged vampire bat—while most prefer fruit or insects. After climbing onto its prey, the vampire bat locates where the blood is flowing with the heat sensor on its nose, and then, using its sharp front teeth like shears, it cuts away any hair that might be blocking the skin. Rather than biting down and sucking like Dracula, the bat creates a small incision and laps up blood from the open wound. They can recognize an individual animal's breathing patterns and return to feed on it the following night, taking advantage of the reliable blood source.

Bats are rarely rabid, with just .05 percent of them carrying the disease—less than dogs or raccoons. The image of a bat getting tangled in your hair also has no basis in reality: Their sophisticated echolocation system signals them to turn long before they have a chance to collide with your head.

6. FEMALE HYENAS HAVE PENISES.

Hyena genitalia has been baffling scientists for centuries. Member of both sexes appear to have a penis, while in females there’s no external vagina to be found. Scientists originally thought that hyenas must be hermaphrodites, but the true explanation is even more unusual. Though it’s often referred to as a pseudo-penis, female hyena genitalia doesn’t produce sperm, technically making it a nearly 8-inch-long clitoris. This appendage is also saddled with all the same duties as a conventional female organ, including giving birth to hyena pups.

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