15 Incredible Facts About Pigeons

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Though they're often described as "rats with wings" (a phrase popularized by the movie Stardust Memories), pigeons are actually pretty cool. From homing instincts to misleading rump feathers, here are 15 things you might not know about these avian adventurers.

1. THEY MIGHT BE THE FIRST DOMESTICATED BIRD.

The common city pigeon (Columba livia), also known as the rock pigeon, might be the first bird humankind ever domesticated. You can see them in art dating back as far as 4500 BCE in modern Iraq, and they've been a valuable source of food for thousands of years.

2. THEY WON OVER CHARLES DARWIN—AND NIKOLA TESLA.

Pigeon-breeding was a common hobby in Victorian England for everyone from well-off businessmen to average Joes, leading to some fantastically weird birds. Few hobbyists had more enthusiasm for the breeding process than Charles Darwin, who owned a diverse flock, joined London pigeon clubs, and hobnobbed with famous breeders. Darwin's passion for the birds influenced his 1868 book The Variation of Animals and Plants Under Domestication, which has not one but two chapters about pigeons (dogs and cats share a single chapter).

Nikola Tesla was another great mind who enjoyed pigeons. He used to care for injured wild pigeons in his New York City hotel room. Hands down, Tesla's favorite was a white female—about whom he once said, "I loved that pigeon, I loved her as a man loves a woman and she loved me. When she was ill, I knew and understood; she came to my room and I stayed beside her for days. I nursed her back to health. That pigeon was the joy of my life. If she needed me, nothing else mattered. As long as I had her, there was a purpose in my life." Reportedly, he was inconsolable after she died.

3. THEY UNDERSTAND SPACE AND TIME.

In a 2017 Current Biology study, researchers showed captive pigeons a series of digital lines on a computer screen for either two or eight seconds. Some lines were short, measuring about 2.3 inches across; others were four times longer. The pigeons were trained to evaluate either the length of the line or how long it was displayed. They found that the more time a line was displayed, the longer in length the pigeon judged it to be. The reverse was true too: If the pigeons encountered a longer line, they thought it existed in time for a greater duration. Pigeons, the scientists concluded, understand the concepts of both time and space; the researchers noted "similar results have been found with humans and other primates."

It's thought that humans process those concepts with a brain region called the parietal cortex; pigeon brains lack that cortex, so they must have a different way of judging space and time.

4. THEY CAN FIND THEIR WAY BACK TO THE NEST FROM 1300 MILES AWAY.

A pigeon flying in front of trees.
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The birds can do this even if they've been transported in isolation—with no visual, olfactory, or magnetic clues—while scientists rotate their cages so they don't know what direction they're traveling in. How they do this is a mystery, but people have been exploiting the pigeon's navigational skills since at least 3000 BCE, when ancient peoples would set caged pigeons free and follow them to nearby land.

Their navigational skills also make pigeons great long-distance messengers. Sports fans in ancient Greece are said to have used trained pigeons to carry the results of the Ancient Olympics. Further east, Genghis Khan stayed in touch with his allies and enemies alike through a pigeon-based postal network.

5. THEY SAVED THOUSANDS OF HUMAN LIVES DURING WORLD WARS I AND II.

Pigeons' homing talents continued to shape history during the 20th century. In both World Wars, rival nations had huge flocks of pigeon messengers. (America alone had 200,000 at its disposal in WWII.) By delivering critical updates, the avians saved thousands of human lives. One racing bird named Cher Ami completed a mission that led to the rescue of 194 stranded U.S. soldiers on October 4, 1918.

6. TWO PIGEONS ALMOST DISTRACTED FROM THE DISCOVERY OF EVIDENCE OF THE BIG BANG.

In 1964, scientists in Holmdel, New Jersey, heard hissing noises from their antenna that would later prove to be signals from the Big Bang. But when they first heard the sound, they thought it might be, among other things, the poop of two pigeons that were living in the antenna. "We took the pigeons, put them in a box, and mailed them as far away as we could in the company mail to a guy who fancied pigeons," one of the scientists later recalled. "He looked at them and said these are junk pigeons and let them go and before long they were right back." But the scientists were able to clean out the antenna and determine that they had not been the cause of the noise. The trap used to catch the birds (before they had to later be, uh, permanently removed) is on view at the Smithsonian Air & Space Museum.

7. YOU CAN TRAIN THEM TO BE ART SNOBS …

Japanese psychologist Shigeru Watanabe and two colleagues earned an Ig Nobel Prize in 1995 for training pigeons, in a lab setting, to recognize the paintings of Claude Monet and Pablo Picasso and to distinguish between the painters. The pigeons were even able to use their knowledge of impressionism and cubism to identify paintings of other artists in those movements. Later, Watanabe taught other pigeons to distinguish watercolor images from pastels. And in a 2009 experiment, captive pigeons he'd borrowed were shown almost two dozen paintings made by students at a Tokyo elementary school, and were taught which ones were considered "good" and which ones were considered "bad." He then presented them with 10 new paintings and the avian critics managed to correctly guess which ones had earned bad grades from the school's teacher and a panel of adults. Watanabe's findings indicate that wild pigeons naturally categorize things on the basis of color, texture, and general appearance.

8. … AND TO DISTINGUISH WRITTEN WORDS.

In a 2016 study, scientists showed that pigeons can differentiate between strings of letters and actual words. Four of the birds built up a vocabulary of between 26 and 58 written English words, and though the birds couldn't actually read them, they could identify visual patterns and therefore tell them apart. The birds could even identify words they hadn't seen before.

9. FLUFFY PIGEON FEET MIGHT ACTUALLY BE PARTIAL WINGS.

A white pigeon with curly feathers and fluffy feet.
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A few pigeon breeds have fuzzy legs—which hobbyists call "muffs"—rather than scaly ones. According to a 2016 study, the DNA of these fluffy-footed pigeons leads their hind legs to take on some forelimb characteristics, making muffed pigeon legs look distinctly wing-like; they're also big-boned. Not only do they have feathers, but the hindlimbs are somewhat big-boned, too. According to biologist Mike Shapiro, who led the study, "pigeons' fancy feathered feet are partially wings."

10. SOME PIGEONS DISTRACT FALCONS WITH WHITE RUMP FEATHERS.

In a life-or-death situation, a pigeon's survival could depend upon its color pattern: Research has shown that wild falcons rarely go after pigeons that have a white patch of feathers just above the tail, and when the predators do target these birds, the attacks are rarely successful.

To figure out why this is, Ph.D. student Alberto Palleroni and a team tagged 5235 pigeons in the vicinity of Davis, California. Then, they monitored 1485 falcon-on-pigeon attacks over a seven-year span. The researchers found that although white-rumped pigeons comprised 20 to 25 percent of the area's pigeon population, they represented less than 2 percent of all the observed pigeons that were killed by falcons; the vast majority of the victims had blue rumps. Palleroni and his team rounded up 756 white- and blue-rumped pigeons and swapped their rump feathers by clipping and pasting white feathers on blue rumps, and vice versa. The falcons had a much easier time spotting and catching the newly blue-rumped pigeons, while the pigeons that received the white feathers saw predation rates plummet.

Close observation revealed that the white patches distract birds of prey. In the wild, falcons dive-bomb other winged animals from above at high speeds. Some pigeons respond by rolling away in midair, and on a spiraling bird, white rump feathers can be eye-catching, which means that a patch of them may divert a hungry raptor's focus long enough to make the carnivore miscalculate and zip right past its intended victim.

11. DODOS WERE RELATED TO TODAY'S PIGEONS.

Two blue and green Nicobar pigeons.
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Though most of this list focuses on the rock pigeon, there are 308 living species of pigeons and doves. Together, they make up an order of birds known as the columbiformes. The extinct dodo belonged to this group as well.

Flightless and (somewhat) docile, dodos once inhabited Mauritius, an island near Madagascar. The species had no natural predators, but when human sailors arrived with rats, dogs, cats, and pigs, it began to die out, and before the 17th century came to a close, the dodo had vanished altogether. DNA testing has confirmed that pigeons are closely related to the dodo, and the vibrant Nicobar pigeon (above) is its nearest genetic relative. A multi-colored bird with iridescent feathers, this near-threatened creature is found on small islands in the South Pacific and off Asia. Unlike the dodo, it can fly.

12. AT ONE POINT, MORE THAN ONE-QUARTER OF ALL THE BIRDS LIVING IN THE U.S. MAY HAVE BEEN PASSENGER PIGEONS.

Wild/feral rock pigeons reside in all 50 states, which makes it easy to forget that they're invasive birds. Originally native to Eurasia and northern Africa, the species was (most likely) introduced to North America by French settlers in 1606. At the time, a different kind of columbiform—this one indigenous—was already thriving there: the passenger pigeon (Ectopistes migratorius). As many as 5 billion of them were living in America when England, Spain, and France first started colonizing, and they may have once represented anywhere from 25 to 40 percent of the total U.S. bird population. But by the early 20th century, they had become a rare sight, thanks to overhunting, habitat loss, and a possible genetic diversity issue. The last known passenger pigeon—a captive female named Martha—died on September 1, 1914.

13. THEY'RE REALLY GOOD AT MULTITASKING.

According to one study, they're more efficient multitaskers than people are. Scientists at Ruhr-Universitat Bochum put together a test group of 15 humans and 12 pigeons and trained all of them to complete two simple jobs (like pressing a keyboard once a light bulb came on). They were also put in situations wherein they'd need to stop working on one job and switch over to another. In some trials, the participants had to make the change immediately. During these test runs, humans and pigeons switched between jobs at the same speed.

But in other trials, the test subjects were allowed to complete one assignment and then had to wait 300 milliseconds before moving on to the next job. Interestingly, in these runs, the pigeons were quicker to get started on that second task after the period ended. In the avian brain, nerve cells are more densely packed, which might enable our feathered friends to process information faster than we can under the right circumstances.

14. PIGEONS PRODUCE FAKE "MILK."

Only mammals produce genuine milk, but pigeons and doves (along with some other species of birds) feed their young with something similar—a whitish liquid filled with nutrients, fats, antioxidants, and healthy proteins called "crop milk." Both male and female pigeons create the milk in the crop, a section of the esophagus designed to store food temporarily. As is the case with mammal milk, the creation of crop milk is regulated by the hormone prolactin. Newly-hatched pigeons drink crop milk until they're weaned off it after four weeks or so. (And if you've ever asked yourself, "Where are all the baby pigeons?" we have the answer for you right here.)

15. ONE STUDY SUGGESTS THAT, GIVEN THE RIGHT CONDITIONS, THEY'RE AS GOOD AT IDENTIFYING CANCER AS DOCTORS.

We've already established that pigeons are excellent at differentiating between artists and words, but a 2015 study revealed they can also distinguish between malignant and benign growths in the right conditions. Researchers at University of California Davis Medical Center put 16 pigeons in a room with magnified biopsies of potential breast cancers. If the pigeons correctly identified them as either benign or malignant, they got a treat, According to Scientific American.

"Once trained, the pigeons' average diagnostic accuracy reached an impressive 85 percent. But when a "flock sourcing" approach was taken, in which the most common answer among all subjects was used, group accuracy climbed to a staggering 99 percent, or what would be expected from a pathologist. The pigeons were also able to apply their knowledge to novel images, showing the findings weren't simply a result of rote memorization."

Mammograms proved to be more of a challenge, however; the birds could memorize signs of cancer in the images they were trained on but could not identify the signs in new images.

No matter how impressive their results, "I don't anticipate that pigeons, no matter how good they become at pathology or radiology, will be playing a role in actual patient care—certainly for the foreseeable future," study co-author Richard M. Levenson told Scientific American. "There are just too many regulatory barriers—at least in the West."

15 Animal Names That Can Be Used As Verbs

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iStock.com/fotojagodka

People can go fishing, rabbit on incessantly, dog one another, and horse around. But because of their usefulness in completing burdensome work, horse has also been used in (originally naval) slang since the mid-19th century to mean “to work to the point of exhaustion”—or, in the words of the Oxford English Dictionary, “to drive or urge at work unfairly or tyrannically.” But horses aren’t the only animals whose names can be “verbed.” From turtles to tigers, you can drop any one of these 15 creatures into your everyday conversation.

1. Bulldog

No one is entirely sure why bulldogs are called bulldogs, with different theories pointing to everything from their bull-like stature to their bullish faces to the fact that they might once have been bred to bait bulls. Whatever the origin, the bulldog’s strength and its robust, resilient behavior means that you can use its name as a verb meaning “to attack roughly,” or “to wrestle to the ground.”

2. Tiger

A tiger
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If you tiger, then you walk to and fro, like a tiger pacing in a cage. If you tiger something, then you paint or mark it with contrasting stripes.

3. Spider

Jumping spider
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As well as being used simply to mean “to creep” or “to move like a spider,” if you ensnare or entrap something, or else cover it in a cobweb-like pattern, then you spider it.

4. Cat

British shorthair cat with expressive orange eyes
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Because the cathead is the horizontal beam at the bow of a ship that’s used to raise an anchor, the word cat has a number of nautical uses as a verb, including “to lift an anchor from the water,” “to secure an anchor,” and “to draw an anchor through the water.” But because shooting the cat was 19th century slang for being sick from drinking too much, you can also use cat to mean “to vomit.”

5. Vulture

White-backed vulture
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Vultures’ grim feeding habits and their remarkable flying ability have given the word two meanings as a verb in English. Feel free to use it to mean “to eat voraciously” or “to tear at your food,” or else “to descend steadily through the air.”

6. Owl

Owl in flight
iStock.com/WhitcombeRD

Owling (as well as being a short-lived social media craze) was once the name given to the crime of smuggling sheep and wool from England to the continent—a crime so-called because the nefarious “owlers” carried out their crimes at night. That might not be the most useful of words these days of course, so feel free to also use owl to mean “to act wisely, despite not knowing anything.”

7. Shark

It’s easy to presume that the use of shark as a verb to mean “to act like a predator” (which is the same shark as in loanshark, incidentally) derives from the deadly sea creatures. In fact, it might be the opposite: Both meanings of the word shark date back to the late 16th century, but it’s possible that the verb shark is the older of the two. If so, it’s possible that it comes from the earlier word shirk (in the sense of using deceit or trickery to avoid work) or else a northeastern French word, cherquier, which was often used in a phrase that essentially meant “to sponge of others” or “to act as a parasite.” So how did sea-dwelling sharks come to be called sharks? It’s possible the deceitful sharks gave their name to the menacing creatures, or else the two could be completely unrelated—and, thanks to a sea battle off the Yucatan peninsula in 1569, shark could in fact be a Mayan word.

8. Monkey

Chimpanzee looking surprised
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As well as meaning “to play the fool” or “to behave playfully”—as in “monkeying around”—monkey, like ape, can also be used to mean “to mimic” or “to copy someone’s movements or actions.”

9. Turtle

If a boat “turns turtle,” then it capsizes and flips over, so that it looks like a turtle’s domed shell floating atop the water. Because of that, to turtle something is to turn it upside down.

10. Snail

Burgundy snail
iStock.com/AlexRaths

For obvious reasons, snail has been used to mean “to move slowly” since the late 16th century, but because of the snail’s coiled shell, you can also use snail to mean “to draw or carve a spiral,” or “to roll into a spiral shape.”

11. Porcupine

Porcupine walking
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When your hair stands on end, feel free to say that it porcupined.

12. Canary

Canary birds take their name from the Canary Islands, which, somewhat confusingly, take their name from canis, the Latin word for “dog.” But in the 16th and 17th centuries, the canary was also the name of an energetic dance inspired by a traditional dance performed by the natives of the Canary Islands. And because of that, you can also use the word canary as a verb meaning “to dance in a lively fashion.”

13. Earwig

Earwig
iStock.com/Mr_Fu

Earwigs are so-called because they were once (thankfully erroneously) thought to crawl inside people’s ears as they slept. Through association with someone whispering clandestinely into someone’s ear, in the late 18th century eavesdroppers and people who seeked to secretly influence others became known as earwiggers—and so to earwig is to do precisely that.

14. Pig

Cute pig leaning on railing of his cot
iStock.com/Fotosmurf03

Pig has been used to mean “to give birth” since as far back as the 15th century in English (a fairly uncomplimentary allusion to a pregnant sow delivering a litter of piglets). But slightly less depreciatively, the living habits of pigs mean that it can also be used to mean “to huddle together,” or else “to live or sleep in crowded or dirty conditions.”

15. Dingo

A dingo
iStock.com/JohnCarnemolla

Because of their stereotypically sneaky behavior, to dingo on someone meant “to let down” or “to betray” them in 1930s Australian slang, while to dingo meant simply “to shirk” or “to back out of something at the last minute.”

This list first ran in 2016.

Photographer's Up-Close Images of Animal Eyes Will Have You Seeing Wildlife in a Whole New Way

A parrot eye
A parrot eye
Suren Manvelyan

Few people ever get close enough to a hippo, hyena, or crocodile to snap a photo of one, let alone get a detailed shot of their eyes. Yet that is exactly what theoretical physicist-turned-photographer Suren Manvelyan, of Armenia, has done. His macro photography series of animal eyes, spotted by My Modern Met, offers a rare look at the animal world, amplified.

Some of Manvelyan's eye photos—like that of the camel, which has three eyelids—look like strange landscapes on some distant, alien planet. The smallest details have been captured in his photos, from the kaleidoscopic irises of the chinchilla and chimpanzee to the shimmery edges of a raven's eye. If the photos weren't labeled, it might be difficult to tell what you were looking at.

"It is very beautiful and astounding," Manvelyan told Radio Free Europe/Radio Liberty. "The surface resembles the surface of other planets, with craters, rivers, and valleys. It looks like something from another world. Every time I photograph the eye, I feel myself traveling through the cosmos."

Manvelyan keeps his photography techniques secret, but he says he sometimes spends an hour with an animal just waiting to capture the right moment. To date, he has photographed both domestic animals (like a husky dog and Siamese cat) as well as exotic ones (including a variety of tropical birds and lizards). Check out some of his shots below, and visit his website to see more photos from this series.

Eye of a caiman lizard
A caiman lizard's eye
Suren Manvelyan

A camel's eye
A camel's eye
Suren Manvelyan

A chinchilla eye
A chinchilla's eye
Suren Manvelyan

A raven's eye
A raven's eye
Suren Manvelyan

A husky dog's eye
A husky dog's eye
Suren Manvelyan

A horse eye
A horse eye
Suren Manvelyan

A chimpanzee eye
Eye of a chimpanzee
Suren Manvelyan

A tokay gecko's eye
A tokay gecko's eye
Suren Manvelyan

[h/t My Modern Met]

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