At the end of summer, the once-bright feathers of a male American Goldfinch look ragged. Growing new flight feathers in a process called molting makes him more vulnerable to predators. Before migrating to wintering grounds, many songbirds stop at a secondary location to undergo the indignities of molting. It’s called molt migration. The places bird…

When woodpeckers drum, they slam their beaks against bark many times per second. Scientists have long hypothesized that woodpeckers have a way of protecting their brains from injury. However, more recent work provides a different picture. High-speed cameras showed scientists that woodpeckers aren’t softening the impacts to their skulls. And researc…

Your eye may be drawn to the gorgeous male Wood Duck, but it is the call of the modestly plumaged female you’ll hear. This call tells the male where his mate is, important as the pair stays together through much of the winter and spring. Wood Ducks are among a small number of North American waterfowl that nest in cavities, and many of them nest in …

Broad-tailed Hummingbirds are small but hardy creatures built for life in the mountains. They survive freezing cold nights by slowing their heart rate and metabolism. And they perform a death-defying stunt for potential mates. Male Broad-tailed Hummingbirds begin their performance by flying up 60 feet or more in the air. Then they dive toward the e…

At a glance, swallows and swifts, both graceful fliers, look much alike. But swifts — like this Chimney Swift — have longer, slimmer wings and short bodies, enabling them to glide for long periods. Their glides are punctuated by rapid, stiff bursts of wing-beats. Swallows, on the other hand, flex and flap their wings. Why do swifts have such a pecu…

Bird beaks, or bills, come in many shapes and sizes. And birds use them for just about everything: to collect food, preen, fight, court (as this pair of Laysan Albatrosses is doing), chop holes in trees, weave nests, and more. In order for a bird to fly, its beak must weigh as little as possible. Beaks are covered with a sheath of a tough material …

Many people take an interest in birds as they get older. But others start very early, like one young BirdNote listener named Ben Bradmon. He has been learning how to identify birds by their calls. His favorite is the Tufted Titmouse. He has also begun deepening his knowledge of birds by sketching them, letting him focus on details of the birds’ app…

The Northern Mockingbird isn’t the only mimic bird in town. Brown Thrashers also learn songs from nearby birds and add them to their repertoire. The species has been documented singing over 1,100 different songs: a mix of imitations and invented little melodies. While mockingbirds usually repeat a song or phrase three or more times before moving on…

There are promising signs that a native Hawaiian bird called the ulūlu is on the way to recovery. Also known as the Millerbird, this small gray songbird nearly disappeared when invasive species including rabbits destroyed most of their habitats on the island of Laysan in the early 1900s. In the 2010s, biologists brought 50 individuals from the Niho…

A slim, sleek bird with a spiky crest, Phainopepla comes from the Greek for “shining cloak.” The name refers to the male’s glistening, inky black feathers, which are set off by piercing red eyes. And if the Greek name isn’t helping you picture it, a common nickname might: the goth cardinal. From February to April, they nest in pairs in the arid Son…

Each year, adults and children gather in Crosslake, Minnesota to celebrate the incredible sounds of the Common Loon — the state bird of the land of 10,000 lakes — by belting out their best impressions. Some of the most impressive competitors are in the Youth category, like 2023’s second place winner Malakai. Hear some strikingly accurate loon calls…

Although some of the Turkey Vulture's habits may evoke our disgust, these remarkable birds also inspire our awe. With wingspans approaching six feet, Turkey Vultures ride currents of air to make their spring and fall journeys, and to cover the miles of their home range in summer. Gliding on updrafts, or pushed along by weather fronts, Turkey Vultur…

A young crossbill starts life with a wedge-shaped beak. As it grows up and starts to feed itself by removing conifer seeds from their tough packaging, the tips of its bill begin to grow rapidly — and then they cross. By the time the bird is a month and a half old, the tips of its bill become fully crossed. More info and transcript at BirdNote.org. …

Horned Larks rival meadowlarks as the most colorful birds of North American grasslands. They live in prairies, fields, and tundra, but agriculture and development now intrude on many of the Horned Lark's traditional nesting areas. The farmland Conservation Reserve Program encourages agricultural landowners to plant resource-conserving vegetation. T…

Great-tailed Grackles are known for their long, expressive tails, and their wide vocabulary of odd sounds. But this bird has another special trait. A researcher named Jessica Yorzinski has shown that Great-tailed Grackles can look at two different objects at once. In a careful experiment, she demonstrated that grackles could point one eye up and on…

In the arid Arizona desert, where cacti thrive but trees are scarce, the Gila Woodpecker and Gilded Flicker carve out nest cavities in living saguaros. Tall, old saguaros may be pocked with twenty or more nest holes, bearing witness to decades of woodpecker families. The woodpeckers excavate a new nest every year, leaving the old, now-empty cavitie…

Twice every day, a rapt audience gathers at the Peabody Hotel in Memphis, Tennessee to see six local celebrities: five ducks and the hotel’s head Duckmaster, Kenon Walker, who leads them in “The Duck March.” With John Philip Sousa music playing, the ducks march across a red carpet through the hotel’s lobby to a fountain. The ducks swim about the fo…

In Africa, where there are dozens of starling species, a quick look reveals a variety of visual stunners. Some of the names hint at their dazzle: Superb Starling, as well as Golden-breasted, Emerald, Purple, Violet-backed, and Splendid Glossy Starlings. Starlings sparkle because they have special extra structures in their feather cells called melan…

A male Buff-breasted Sandpiper courts a female on their breeding grounds far north of the Arctic Circle. He raises his wings, flashing their silvery-white undersides, as he sings his clicking serenade. These birds spend much of the year on grasslands in Argentina, migrating to the Arctic in late spring. In the lower 48, September is a good time to …

If long migratory flights are amazing, what goes on inside a bird’s body during those flights seems absolutely astonishing. To store fat, birds may eat three times as much and forage over many more hours than normal, as they prepare for long-distance travel. Blackpoll Warblers double their weight in the lead-up to migration. Wilson’s Phalaropes may…

Though half the size of a robin, the Carolina Wren has a powerful singing voice that seems to come from a much bigger bird. Many people remember their song with the phrase, “teakettle-teakettle-teakettle!” When these secretive birds venture into the open, look for their cocked tail, bright white eyebrows, tan breasts, and golden-brown backs. One re…

The Maui Bird Conservation Center helps care for Hawai‘i’s critically endangered bird species, some of which have gone extinct in the wild. Jennifer Pribble, the center’s Wildlife Care Supervisor, lives onsite. A year ago, several wildfires broke out on Maui island in Hawai‘i, killing over a hundred people. The first fire likely began in the forest…

New Zealand was once home to a massive parrot that stood three feet tall, about hip-high to most adult humans. It’s estimated that the bird weighed around fifteen pounds, and it probably didn’t fly. But it didn’t need to, because there were no land predators at that time — between 16- and 19-million-years ago! More info and transcript at BirdNote.o…

Many oceanic species like grebes, loons, pelicans, and gulls migrate far inland to raise their young near freshwater lakes. Ring-billed Gulls, for example, breed throughout the northern U.S. Forster’s Terns can be found catching fish in the upper Midwest in the summer. In northern Canada, you may even catch a glimpse of a Surf Scoter as it dives be…

While Sierra Taliaferro was working as a Naturalist in Broward County, Florida, in 2021, she collaborated with Broward County Library to help enhance the public’s knowledge about birding. More people became interested in birding as a safe outdoor activity during the pandemic. Sierra and others designed birding backpacks with field guides and binocu…

Owls are magnificent animals that share our cities with us, and live in some of the most extreme environments on Earth. They range in size from huge, like the Blakiston’s Fish-Owl of Eastern Asia, to the songbird-sized Elf Owl, weighing less than half a deck of cards. Owls play key roles in their ecosystems and even help control pests such as non-n…

The flocking movements of homing pigeons are governed by a pecking order. Higher-ranked birds have more influence over how the flock moves. Leading birds change directions first, and followers swiftly copy the leader's movements. And birds at the front of the flock tend to make the navigational decisions. In other words, the pigeons follow the lead…

We often think of birds migrating south in the fall. But many species kick off their big trips surprisingly early in the year. Shorebirds nesting in the Arctic tundra are an extreme example. Birds like the American Golden-Plover have a small window of time to build a nest, find a mate, and lay eggs in the short Arctic growing season. Golden-plovers…

Northern Gannets, fish-eating seabirds, dive headfirst into the ocean at speeds of up to 60 miles an hour, pursuing their prey. Sometimes, they get help. Dolphins herd fish into dense, frantic concentrations near the surface, while gannets take advantage and plunge into the shoals from aloft. Scientists call this a multi-species feeding association…

A flock of shorebirds flying wingtip to wingtip seems to act like a single organism, rolling and twisting in exquisite patterns. Flocks like these use a combination of two organizational patterns. One is a “cluster”: lots of birds flying together in a loose, three-dimensional cloud. The second is a basic V-formation, where smaller groups of birds w…

Birds were one of the earliest subjects for human artists. A cave painting in France over 30,000 years old shows the unmistakable outline of an owl. Paintings on Ancient Egyptian palaces and tombs feature birds with intricately detailed flight feathers, colors, and postures, allowing researchers to identify the species thousands of years later. Mor…

When a hawk is about to capture a songbird, the songbird has one last trick: a fright molt. It’s when a bird loses feathers due to sudden stress. This usually involves feathers near the tail or rump, where they’re most likely to be attacked as they flee. It can be a saving grace when the bird is about to be caught — similar to a lizard dropping its…

The slim, 4½-inch Blue-gray Gnatcatcher is found over much of the East and Midwest and in parts of the West, too. It actively searches trees and bushes for small bugs to eat, often hovering briefly and flaring a long black-and-white tail. More info and transcript at BirdNote.org. Want more BirdNote? Subscribe to our weekly newsletter. Sign up for B…

When a bird of prey flies over, a flock of crows may dive-bomb the predator and give it a noisy escort out of town. An Eastern Kingbird, like this one, will clamp its feet onto the back of a hawk to send it packing. How do they know which birds to chase off and which to ignore? By genetic wiring, or instinct, but also learning. By watching their pa…

In general, the bigger the bird, the higher the number of feathers. Someone counted the feathers on a Tundra Swan and came up with 25,216. At least 80% were on the swan’s neck. Penguins, on the other hand, have lots of small feathers all over their bodies. The largest species is the Emperor Penguin, and one project counted around 80,000 feathers on…

Sam ‘Ohu Gon is the Senior Scientist and Cultural Advisor for the Nature Conservancy of Hawai‘i. He's something of a rare combination: academically trained in conservation biology as well as traditionally trained in Hawaiian chant and ceremony. Sam's work tries to bridge traditional Hawaiian knowledge with conservation to ensure the remaining speci…

Visit a shallow wetland in summer, and you might see this slender, black-and-white shorebird with outrageous red legs. The Black-necked Stilt uses its long legs for wading as it feeds on tiny insects and crustaceans on the surface of the water. Stilts are sensitive to drought, which has increased with global climate change. But they readily move to…

By carrying more people in a single vehicle, mass transit can use less energy than cars. Taking steps to reduce greenhouse gas emissions can help the hundreds of bird species put at risk by climate change. Not to mention, you can do a little birding on the commute – on the way to the bus or train stop, and on the ride itself. More info and transcri…

Black-crowned Night-Herons feed primarily on fish, but they will consume everything from earthworms to clams to eggs of nesting birds and refuse at landfills! Because they are high on the food chain, found throughout much of the world, and nest in colonies, Black-crowned Night-Herons can tell us a lot about the health of our environment. More info …

Shorebirds' lives take them to many places other than the shore. Most of the shorebirds we see along our coasts migrate to the Arctic in summer. Here, many nest on the tundra, some along rushing streams, and others on rocky mountainsides. Long-billed Curlews winter on the Florida, Gulf, and Pacific coasts. But this one was seen in a field near Cres…

The rainforests of Eastern and Northeastern Australia harbor many species of birds found almost nowhere else. This Eastern Whipbird — which is more often heard than seen — hangs out in the dense understory. Easier to lay eyes on is the large, pigeon-like Wompoo Fruit-Dove. Feathered in a stunning combination of green, purple, and yellow, this bird …

Over the last few years, writer Emily Raboteau has been going out and photographing a series of bird murals found throughout New York City commissioned by the National Audubon Society. One day, she came across an artist finishing up a Gray Hawk mural in west Harlem. The artist explained that she had chosen to paint that species because the gray fea…

In Texas, Pennsylvania, and elsewhere, people have reported seeing Northern Cardinals that are red on one side and brown on the other, indicating that a bird is half male and half female. This anomaly occurs in other species of birds, as well, not just cardinals. Insects, too! Scientists call these bilateral gynandromorphs. More info and transcript…

Ornithologist J. Drew Lanham's favorite bird is “the one with feathers.” But here, he shares a few species that have been especially on his mind lately — “selected birds of the moment annotated by why.” More info and transcript at BirdNote.org. Want more BirdNote? Subscribe to our weekly newsletter. Sign up for BirdNote+ to get ad-free listening an…

Feathers are amazing structures. But after about a year, constant use and exposure to the elements mean they have to be replaced. So how do you replace the roughly 20 feathers in each wing that are essential to flight? Many species — such as this Common Raven — molt just a few feathers at a time so they can still fly. But waterbirds like ducks and …

Today kicks off Coral Reef Awareness Week. Coral reefs are hotspots of biodiversity, but they’re threatened by warming ocean temperatures, pollution, and overfishing. One thing to be aware of this week is how these underwater ecosystems are linked to birds in the skies above them. And seabirds that nest near coral reefs are a great source of nutrie…

This American Kestrel evolved to nest in tree cavities or small caves in cliffs. We humans have made life difficult for kestrels. Development has shrunk the open spaces they need. We’ve cleared away dead trees they rely on for nests and sprayed pesticides that eliminate the insects the birds eat. But we humans are also in a position to help. Volunt…

A movie runs at 24 frames per second, just right for humans to sense as normal speed. Pigeons process the visual world several times faster. The frantic car chase that puts us at the edge of our seats would likely appear — to a pigeon — more like a slideshow or PowerPoint. A bird’s rapid-fire perception is vital to its staying alive, whether it’s h…

Many people would tell you that hearing birdsong puts them in a good mood. Recently, scientists have tried to put numbers to this effect that many of us have noticed. One study found that people who spent a few minutes immersed in the sounds of birds had lower levels of paranoia and anxiety than those who only listened to traffic noise. More info a…

Many woodpeckers chisel out deep cavities in tree trunks in order to lay their eggs and raise their brood. The cavities hollowed out by the birds vary in size, depending on the species of woodpecker. The chamber of a tiny Downy Woodpecker descends about a foot from the opening, while the Pileated Woodpecker may chip out a chamber two feet deep. Bot…