A Merlin — like this one — hunts boldly from a high perch. A Peregrine Falcon dives on a hapless pigeon, with an air speed approaching 200 miles per hour. The Gyrfalcon can fly down even the fastest waterfowl in a direct sprint. A Prairie Falcon blends in with its background. And the…

High in a leafless cottonwood, a female Great Horned Owl incubates two eggs. As light snow falls on her back, her mate roosts nearby. Since December, this pair has been hooting back and forth regularly at night. Great Horned Owls nest in winter, because the owlets, which hatch after a…

Evolution works with what's at hand. So if you start with a normal bird skull – bill pointing forward, eyes oriented front or sideways, ears behind eyes – and introduce the challenge of seeing behind your head while your bill is pushed deeply into the soil, what do you get? The American…

The peace of the vast Guyanan jungle is abruptly broken with the dawn chorus of male Capuchinbirds, one of the most bizarre birds in South America. The singing male bows forward, then suddenly stretches to his full length, raising a monk-like cowl of feathers around his naked blue-gray…

The "Violaceous" Trogon (recently split into three species), which nests in Mexico, Central America, and northern South America, often excavates its dwelling within a large, active wasp or termite nest. It begins by devouring some of the insects, then digs a cavity large enough to…

In the savanna country of northern Australia, the vegetation is well adapted to the area’s recurrent fires. As flames sweep across the savanna, Black Kites watch for prey like grasshoppers and lizards that flee the fire. But there’s now evidence that Black Kites may actually create fires…

Listen to the earth awaken, as dawn circles the globe. Acoustic ecologist Gordon Hempton recorded these sounds around the globe. He's with SoundTracker.

Coast to coast, border to border, forest to feeder, the Downy Woodpecker goes about its business in 49 states. The smallest woodpecker in the United States, it turns up everywhere there are a few trees, except in the dry deserts of the Southwest and in Hawaii. Sign up for weekly preview…

Few backyard birds in North America are more widespread than the Song Sparrow. But it was the study of this seemingly unremarkable bird that helped shape modern ornithology. In 1928, Margaret Morse Nice began carefully observing Song Sparrows near Columbus, Ohio, where she lived. For eight…

Snow Buntings begin their lives amid the harsh conditions of the high Arctic. They're prized winter visitors to the northern tier of states. Look for them along shorelines, in farmland, and open country - landscapes that mirror the Arctic tundra where they fledge their young. Snow Buntings…