While it’s still winter in many parts of North America, it’s summer in Antarctica. And the King Penguins are singing! Some form breeding colonies that number in the tens of thousands. When many pairs of these colorful birds tip their heads back and sing, it sounds like the world’s largest…

By winter, most warblers have migrated south. But the Yellow-rumped Warbler, which birders affectionately call “butterbutt” is a lesson in adaptation, notes Bryan Pfeiffer, a writer, naturalist, and educator who lives in Vermont. “In winter, when most of their kin are enjoying insects in…

When scientists need to capture birds for research, they often use a mist net, a length of fine mesh strung between two poles on the ground. But what about catching birds that stay up in the treetops? Researchers studying Red-headed Woodpeckers in Virginia used fishing rods to cast lines…

Sharp, insistent cries signal the presence of one of North America’s most beautiful birds of prey: the Red-shouldered Hawk. There’s no mistaking this striking hawk for any other; the front of its body glows bright chestnut, the back boldly spangled black and white, the shoulders, that same…

A close look at this Red Crossbill reveals a curious adaptation. The long tips of the upper and lower bill don't meet, but instead cross over each other. The Red Crossbill bites between the scales of a cone and pries them apart by opening its bill, then dislodges the seed with its tongue…

This American Robin has caterpillars and an earthworm in its beak. But which food source is the real prize? Everyday earthworms are higher in protein than beef or chicken. You’d have to eat about a pound of soybeans to equal the protein in just three ounces of earthworms. They’re also high…

One bird of prey may steal another's meal, a behavior that biologists call piracy, or kleptoparasitism. The prey may change hands several times, perhaps from Northern Harrier to Peregrine Falcon to Bald Eagle. The Peregrine - like the one seen here - may steal a meal, or have its meal…

For today’s bird walk, we’re going to need binoculars, sunscreen, hiking boots, annnnnd a time machine. Let’s set our course for the late Cretaceous Era, 65 million years ago. Stay alert! There are dinosaurs all around us, of all sizes — and appetites — including some of the earliest birds…

These Downy and Hairy Woodpeckers appear nearly identical, but the Hairy Woodpecker is larger than the Downy, with a distinctly longer bill. And it doesn't have the black spots on its outer tail feathers like the Downy. But even if you can’t observe these spunky birds, you can identify…

By December, an array of diving birds that nested at far northern latitudes are wintering on temperate waters across the continent. If we could watch them under water, we'd see this Common Loon racing like a torpedo. A goldeneye dives under water and swims about 10 feet from the surface…