12 Facts About Mandarin Ducks


Recently, the mysterious appearance of a mandarin duck alongside the native mallards in ponds across Central Park has captivated New York City, with large groups lining up to catch a glimpse (and snap a photo) of the brightly colored bird. It's unclear where he came from—though he has a band on his leg, he doesn't belong to any zoos in the area, which has led some to speculate that he was a pet who either escaped or was dumped by his owner in the park—but one thing is clear. This "hot duck" is taking the internet by storm. Curious about where the mandarin duck is from, what it eats, if you can keep one as a pet, and even what it tastes like? Read on.


A close-up image of a brightly colored mandarin duck.

Dubbed Aix galericulata by Carl Linnaeus in 1758, the Aix in the mandarin duck's scientific name is Greek for an unknown diving bird mentioned by Aristotle. The galericulata is something like "wig" or "cap" and references the bright breeding plumage on the male’s head.


A mandarin duck swimming.

The native breeding area of the mandarin duck is eastern Siberia, Japan, China, and parts of North Korea, and they overwinter in southern China and Japan. But according to the citizen science website eBird, mandarin ducks have been spotted in multiple sites on the west coast of America—there's a growing population of the birds in California—and are present in Florida and a few other isolated areas. The Florida Fish and Wildlife Conservation Commission notes that “Species are present but not confirmed to be breeding. Population persists only with repeated introductions and/or escapes of individuals.”

They’re much more common in Europe, especially southeast England, which has an estimated population of around 7000 individuals. The ducks were mostly released in the early 20th century, although there are records of introductions as early as 1745 [PDF]. They've also been found in other parts of Europe, Israel, and Africa (although, as in Florida, some of these populations are escaped ornamental birds that aren't necessarily breeding on their own [PDF]).


An image of a female and a male mandarin duck.

Sadly, they're threatened by severe habitat loss across their native range and have a global population of around 65,000 individuals. As a result, the European population is often considered important for the species survival. Officially, however, the bird is classed as "Least Concern" by the IUCN.


A male and female mandarin duck touching beaks.

It's thought that the first reference to mandarin ducks was from the time of Confucius, where they were name-dropped in a song. They're also significant in Buddhism, where there are references to their compassion and, most significantly, their marital loyalty. Multiple legends in Japan refer to a male and female mandarin duck getting separated and using supernatural means (such as transforming into humans) to be reunited.


A female and a male American Wood Duck standing on a rock.

Mandarin ducks belong to the genus Aix, alongside the American wood duck. They're both hole-nesting ducks with brightly colored males. But perhaps most surprisingly for ducks, they have claws. The claws allow them to perch on branches, and in the case of baby mandarin ducks, one paper says that when they're as young as one day old, they can dig those claws into wood, then leap half a foot, and then dig in the other claw [PDF].


A male and a female mandarin duck sitting on a rock.

The male mandarin duck is extremely easy to identify. Considered one of the prettiest birds, it has orange, green, white, blue-ish, and black feathers, some of which curl up into a "sail" shape. (However, in eclipse plumage—a set of feathers sported by the ducks when it's not the mating season—the male is a much more standard gray.)

Female mandarin ducks are nowhere near as distinctive, and it can often be difficult to distinguish them from the closely related native female wood ducks (the males look completely different) [PDF]. Female mandarin ducks are gray but have a pale tip at the bill and a stripe behind the eye.


A male mandarin duck with its beak open.

Mandarin duck courtship rituals are, as is probably expected from their plumage, impressive affairs. They mock drink and mock preen, they shake, and emit a sound that one researcher likened to "a half-repressed sneeze." Most of the rest of the time they're rarely vocal, with the occasional "staccato hwick or uib uib" from the male and a "coquette call" from the female.

As for their famous monogamy, it’s thought to derive from observations of their frequent courtship displays and frequent ejection of intruders. In reality, they likely are monogamous for at least several years, although bigamy/polygamy is not unheard of.


A male mandarin duck from above.

The natural nesting habitat of mandarin ducks is in tree holes, which can sometimes be up to 30 feet off the ground. The bird lays nine to 12 white eggs that are incubated for around a month. When the eggs hatch (which occurs within a few hours of each other), the ducklings start to crawl out of the nest. To get out of the tree and—eventually—into the water, the baby bird flings itself out of the hole and free-falls to the ground below (often with a little bounce). According to mandarin duck scholar Christopher Lever, "The female stands at the base of the tree with her head pointing upwards, uttering a soft encouraging call to her offspring."


A male mandarin duck cleaning its feathers.

It's widely said that one of the factors that has allowed mandarin ducks to survive in east Asia is their taste—which is not particularly nice. Christopher Lever quotes an authority as saying, "Mandarin duck in China are rather dirty feeders, often eating snails, small mice, fish spawn, etc., and consequently are well known to have an unpleasant taste."


A male mandarin duck standing on a rock in a pond.

Feng Shui is a traditional Chinese method of balancing energy forces, and a large part of some schools involves placing certain objects to match and harness that energy. Many modern Feng Shui practitioners claim that, because of their association with love and monogamy, having a pair of mandarin duck figurines can attract and enhance love. Practitioners advise placing the figurines so they either face each other or the same direction. Never separate them, and if one breaks, the entire pair should be replaced.


A male mandarin duck sleeping.

Mandarin ducks are very popular pets; in fact, according to one report from the Netherlands, they're "by far the most popular duck kept in private collections" in that region [PDF]. They're considered easy to keep, but just because you can buy one doesn't mean it's legal to have one: In New York, for instance, it's illegal to keep a duck as a pet (alongside bears, cobras, whales, and many other creatures).


A male mandarin duck and a male American wood duck.

Paul Sweet, ornithologist at the American Museum of Natural History, tweeted that it was possible that mandarin ducks could become established and compete with native wood ducks. Little research has been done on mandarin ducks in the United States, but a recent report from the Netherlands suggests that there might be cause for concern [PDF]. There is some evidence that they destroy the eggs of other birds in a lab setting, although the extent of this behavior in the wild is unclear. They're also known to drive other birds away from food—although again, their impact is unknown. As for hybridizing, there’s a myth that they can’t reproduce with other birds. While crosses with other ducks are rare for mandarins, there have been reports in Europe of birds appearing that seem to be mixes of introduced mandarin ducks and introduced American wood ducks.

10 Terrifyingly Huge Birds You Should Know

AndreaWillmore/iStock via Getty Images
AndreaWillmore/iStock via Getty Images

They’re gigantic, they’re often defensive, and you wouldn’t want to run into them in a zoo after hours. Meet a few of the world’s biggest birds with attitude, from flightless giants to modern-day pterodactyls.

1. Ostrich

Everyone knows that the ostrich is the world’s biggest bird, weighing an average of 230 pounds and standing 7 feet tall (and some individuals can grow up to 9 feet). They can also chase you down: Ostriches are the fastest species on two legs, with a top speed of about 43 mph. They can maintain a swift 30 mph pace for 10 miles, making them the marathon champs of the avian world.

2. Southern Cassowary

Often called the most dangerous bird on Earth, in addition to being one of the planet’s biggest birds, the southern cassowary is roughly 150 pounds of mean. On each foot is a 5-inch claw that cassowaries use to defend themselves. At least two people have been kicked to death by cassowaries, the most recent being a Florida man who unwisely kept one of the birds as a pet.

3. Emu

Emu with eggs
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Like a smaller, shaggier ostrich, the 5- to 6-foot emu is the second-largest bird on Earth (as well as a goofy spokesbird for insurance). During the breeding season, female emus fight enthusiastically over unattached males. But the results of this mating ritual are impressive: clutches of forest-green, oval eggs that resemble giant avocados.

4. Greater Rhea

This flightless bird is named for the Titan goddess Rhea, who gave birth to all of the Olympian gods and goddesses in Greek mythology. At up to 5 feet tall and 66 pounds, the greater rhea may not seem like as much of a terror as the ostrich. But it gathers in massive flocks of up to 100 birds during the non-breeding season, so watch out if you happen to be in its South American habitat.

5. Dalmatian Pelican

Dalmatian pelicans
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How scary can a pelican be, you ask? When it stands almost 6 feet tall, weighs 33 pounds, and has a wingspan of 9 feet—all traits of the Dalmatian pelican—it's pretty petrifying. These scruffy-feathered monsters, native to Europe and Asia, breed in colonies of up to 250 pairs and can gulp impressive mouthfuls of fish in one go.

6. Mute Swan

One of the heaviest flying birds, mute swans look harmless as they glide over ponds, lakes, and rivers. But mute swans are far from silent when defending their families and territory. Male swans warn interlopers that they’re getting too close with a hiss, then can launch a straight-up assault, bashing the intruder with their wings. They’ll even attack kayakers, canoeists, and people just minding their own business.

7. Andean Condor

Andean condor
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This freakishly big vulture isn’t satisfied with just any carrion—it prefers large carcasses like cattle and deer for dinner. Maintaining its average weight of 25 pounds requires a lot of calories, after all. Its wingspan is slightly less than its northern cousin, the California condor, but it still reaches a dramatic 9 to 10 feet.

8. Cinereous Vulture

Another big bird with a 10-foot wingspan, this Old World vulture has excellent vision to spot carrion while it flies, and a featherless head that resists the accumulation of gore when it feeds. Though it’s intimidating to look at, the cinereous vulture plays an important role in its ecosystem by cleaning up roadkill and other dead animals.

9. Marabou Stork

Marabou stork
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As if its red-tinged wattle, black back, and dagger-esque bill weren’t alarming enough, the marabou stork is sometimes called the “undertaker bird” thanks to its Dracula-like appearance. It also eats other birds. The largest verified wingspan on a marabou stork measured 10.5 feet, though unverified reports cited a specimen with 13.3-foot span.

10. Shoebill

Shoebill storks may not be the tallest, heaviest, or widest-winged birds, but just look at that death stare. On top of having a nutcracker for a face, the 5-foot-tall shoebill leads a fearsome lifestyle. It stands absolutely still for hours to hunt prey, watching for lungfish or baby crocodiles, then spreads its wings and collapses over it while trapping the target in its bill.

Scientists Capture Video of Deepstaria, a Rarely Seen, Shapeshifting Jellyfish


Millions of years of evolution taking place beneath the sea's surface have produced some bizarre animals. Jellyfish are among the oldest—and strangest—of the bunch. Some have "transient" anuses that only form when necessary, and others can renew their life cycles indefinitely. Little is known about Deepstaria, a jellyfish recently spotted by the crew of the Nautilus research vessel in the central Pacific Ocean, but as the video below shows, it's no less unusual than other species of jellyfish.

As Live Science reports, scientists aboard the Nautilus were scanning the seafloor about halfway between the U.S. and Australia when they spotted a spooky-looking creature hovering in front of them. It soon became clear that cosplaying a ghost wasn't all it could do. The jelly unfurled its sheet-like bell to reveal a geometric mesh membrane used to distribute nutrients throughout its body—a telltale sign of Deepstaria. It spends the rest of the video putting on a show for its guests, transforming from something resembling a crumpled plastic bag to a billowing blanket shape.

Deepstaria enigmatica was discovered by the Jacques Cousteau-designed Deepstar 4000 submersible—the vessel the species is named after—in the 1960s. It's only been spotted about a dozen times in the years since, and many details of how it lives remain a mystery to researchers.

Deepstaria's most distinctive feature is its massive, flowing bell. It lacks the tentacles most jellyfish use to wrangle prey, and scientists suspect it instead uses its bell as a net when hunting. The specimen captured in this video appears to be harboring a stowaway: a bright-red, living isopod suspended inside the bell. It isn't clear if the creature hitched a ride on purpose to evade more ferocious predators, if it's some type of parasite, or if it's the jellyfish's lunch.

With so many undiscovered and understudied species living in the sea, the Nautilus research vessel is frequently stumbling upon extraordinary examples of ocean life. In 2016 alone, it recorded footage of a googly-eyed stubby squid and a mysterious purple orb.

[h/t Live Science]