BirdNote Daily

When a Northern Saw-whet Owl spreads its wings, many birds can see something our human eyes can’t: the owl’s flight feathers glow with ultraviolet light. It’s invisible to humans without the help of a UV blacklight. While the glowing feathers on parrots might help them attract mates, the reason for the owls’ glowing feathers still isn’t clear. However, scientists realized that they could estimate...

Compared to many birds, Great Horned Owls remain with their parents a long time. They hatched in early March, from eggs laid in late January. By April, both parents were hunting through the night to feed their young. But for the last two weeks, the adults have not fed the young. The owlets have learned the skills they need to hunt for themselves. And any night now, the young owls will strike out o...

The United States is home to more than 550 National Wildlife Refuges – havens for wildlife, including the Canvasback. But only one refuge can claim the distinction of being international: the Detroit River International Wildlife Refuge. It hosts millions of migratory ducks annually in the heart of a major metropolitan area! More info and transcript at BirdNote.org .  Want more BirdNote? Subscribe...

Novelist Kira Jane Buxton has written several books about a pet crow navigating a post-apocalyptic world. But her writing is full of real-world bird behaviors. She has taken inspiration from how sparrows line their nests with cigarette stubs — which can deter mites — and many other bits of animal trivia. “I maintain that anything I took liberties with, in terms of the more fantasy or fantastical e...

Superb Fairy-wrens teach their embryonic chicks a secret code. This incubation call contains a special note that will later serve as a password. When the chicks have hatched, this password enables the adult birds to identify their babies in the darkness of their domed nest. A species of Australian cuckoo lays its eggs in the wren’s nest, hoping to pawn off the task of parenting. But wren chicks le...

In Lafayette Park in St. Louis, Missouri, a dozen or so Eurasian Tree Sparrows from Germany were released. But unlike other introduced species such as the similar-looking House Sparrow, they did not spread very far and remained in a limited area in the Midwest. It’s not fully clear why, but it’s possible that they just behave differently. And the aggressive House Sparrow may have helped prevent th...

In this episode, the Private Eye tells his saddest story: his nemesis bird. That’s what birders call a species that keeps giving you the slip. His nemesis is the Painted Bunting, a colorful gem of a bird. When word of the species being spotted nearby reaches the PI, he rushes off to see it, hoping to end his struggle to see the bird at last… More info and transcript at BirdNote.org .  Want more Bi...

You don’t need fancy binoculars or lavish trips abroad to look for birds. In fact, you don’t even have to leave home — you can enjoy the birds out the window every day. And you don’t actually have to physically go anywhere to find birds. You can use a smartphone or computer to go birding. There are several websites where you can view live feeds of nests. Or you can even have your own bird feeder c...

In a clearing where an ancient Mayan city once stood, the Montezuma Oropendola perches and sings. His courtship display is astonishing: he swings by his feet and sings, his tail describing a golden pendulum – the very source of his name in Spanish – oropendola. More info and transcript at BirdNote.org .  Want more BirdNote? Subscribe to our weekly newsletter. Sign up for BirdNote+ to get ad-free l...

Birds called prions have an especially creative approach to getting their food. They pass seawater through their mouths and filter it to catch tiny animals such as krill and other small crustaceans. It’s similar to how baleen whales feed, leading to the prion’s nickname: the whale-bird. The sides of their bills have comb-like structures. Small food items get trapped in the combs as water flows pas...

In addition to their scientific names, birds are also given "official" English names. Take the bird commonly known as the rain crow, for example, officially referred to as the Yellow-billed Cuckoo by the American Ornithological Society. Its scientific name is Coccyzus americanus. Of course, the bird doesn’t care what you call it, so long as it has plenty of hairy caterpillars to snack on. More inf...

When climate scientist Sofia Barboza was living in New York City, she found it challenging to connect with the outdoors the same way she had growing up in Pennsylvania. Returning to live in Pennsylvania as an adult, Sofia brought along her new awareness of birds and their effects on mental health. More info and transcript at BirdNote.org .  Want more BirdNote? Subscribe to our weekly newsletter. S...

During migration, some birds change orientation, often by a full 180 degrees, and travel almost the same distance — but in the opposite direction — as the rest of their species. The phenomenon is called misorientation. First-year birds are particularly susceptible. Many vagrant birds never find their way back on course, but some do, getting more comfortable with the route each year. More info and...

Rosa Malagon grew up believing that birds hold spiritual significance, thanks to teachings from her Mexican heritage that her mother would share. Now working for the Hispanic Access Foundation, Rosa helps connect Latino-led nonprofits with funding from the U.S. Forest Service. She also leads monthly hikes in central Florida, sharing her love for birds and the outdoors with her community. More info...

Once nesting season ends, swallows know it's time to party! Whether they nest as single pairs or in large colonies, both adults and juveniles now gather on electrical wires by the dozens, socializing before they migrate. Migrating by day – and foraging for insects as they go – swallows (including this Violet-green Swallow) head south to Mexico and Central and South America. More info and transcrip...

The White-vented Storm-Petrel is a small black and white seabird found off the coasts of Chile and Peru. Storm-petrels spend their entire lives at sea, except when nesting. Scientists had long been mystified about just where this species nests. A search lasting eight years led them to a site 50 miles inland in the Atacama desert, a place often compared to the surface of Mars. They employed dogs sp...

Brown-headed Cowbirds have a sneaky approach to parenthood. They lay eggs in the nests of other songbirds, and the songbird hosts often raise the cowbird chick as their own. It’s called nest parasitism. But sometimes the hosts throw out the odd-looking egg. And when that happens, the cowbirds sometimes retaliate by destroying the hosts’ other eggs. Scientists call this “mafia behavior,” likening i...

Keas are large alpine parrots from New Zealand. Intelligent and social, they have olive-green plumage, a red rump, and a long, curved beak. Keas produce a distinct warbling call, a “play call,” that sounds — and functions — much like a human’s contagious laughter. Scientists made recordings of captive Keas making warbling calls, then played them for wild Keas. They began playing harder and even en...

In the late 19th and early 20th centuries, the human fascination with bird feathers went a little too far. Women’s hats and dresses featured extravagant feathers from birds both near and far. The trade in feathers drove several species, from the Little Egret to the Great Crested Grebe, to near-extinction. Fed up with the killing of wild birds for fashion, a group of British women met to put an end...

Hummingbirds use their long tongues to sip nectar from flowers. They’re able to roll their tongues into a tube-like shape. Since the 1800s, scientists thought those tongues worked through capillary action, like how water instantly rises into a straw in a full cup. But when scientists spent years using slow-motion cameras to capture hummingbirds drinking in greater detail, they uncovered a complete...

Sculptor and musician Walter Kitundu first became enraptured by birds in 2005 when a Red-tailed Hawk flew four feet above his head. He named the bird Patch, after the white patch on the back of her head, and kept returning to the park to see her. Patch became used to Walter, accepting him as part of the landscape. He documented her transition from juvenile to adult, learning her quirks and manneri...

Birds are part of the complex web of Nature, and each fits into this web in its own way. Some even pollinate flowers! While feeding at a flower, this Rainbow Lorikeet gets pollen on its forehead and throat. When it visits another flower of the same species, it transfers the pollen to that flower. The pollen fertilizes the plant's eggs to produce its seeds, and the plant's reproduction is assured....

Once abundant around San Francisco Bay, the Ridgway’s Rail — formerly known as the California Clapper Rail — is now endangered. In the 19th Century, unregulated hunting plundered the species. In the 20th Century, rampant development reduced salt marsh habitat by 85%. But in the 21st Century, the Ridgway’s Rail has allies. Restoration is under way to increase healthy saltmarsh habitat for these end...

With their excellent sense of smell, pigs are renowned for sniffing out truffles, a fungus that grows underground and is prized for its taste. But it turns out that some bird species can also find their way to a truffle treat. Researchers working in the Patagonia region of Chile had noticed truffles with little beak-sized bite marks, and even watched a bird eat a truffle. They found truffle DNA in...

Let’s talk about nests. Every spring, robins build their cup-shaped nests using grass and mud. Orioles weave a hanging sack. It’s hard work, and yet once the chicks fledge, the structures probably won’t be reused. But bigger birds, such as herons, hawks, and eagles, often reuse a nest for many years. Europe’s migratory White Storks — like those pictured here — get the award for best reuse. One nes...