One of the most difficult skills to pick up as a birdwatcher is how to identify birds in flight. You have to sort through a series of visual clues all at once, at high speed: silhouette, wing shape, how fast it flaps, and patterning. An experienced birder will take in all these and other…

Northern Mockingbirds can learn to mimic the sounds of just about any bird. They mimic to show off, not to deceive. But this Thick-billed Euphonia, a tiny songbird in South America, employs what scientists call “deceitful mimicry.” When frightened by a predator near its nest, a Thick…

The Canyon Wren makes its home on the steep rocky outcrops and vertical stone cliffs of the coulees and mesas of the West. The birds are found from Mexico all the way through southern British Columbia. They live among the rocks all year long, nesting in rock piles and beneath overhangs…

For some of us, it’s hard to get excited about gulls. But they are just as fascinating – and have as much to tell us – as other birds. Take the Herring Gull, for example. Its appearance is striking, and its voice is unforgettable. Along the Atlantic coast of North America, the nesting…

With its rubbery-sounding rattles and clownish red eyebrows, the ptarmigan is quite the stand-out northern bird. As winter approaches, the ptarmigan’s feet grow feathers, and its claws grow longer. All that added surface area means the ptarmigan practically has its own set of snowshoes…

There are nearly ninety species of wrens in the world, and quite a few are exceptional singers. Nearly all of them reside in the Western Hemisphere, with the majority living in Central and South America. The White-bellied Wren ranks among the tiniest, at just under four inches, while the…

National Audubon's Corkscrew Swamp Sanctuary is birdy at any time of year. But in winter, this mixture of cypress swamp and pineland comes alive with migratory songbirds. On a warm, sunny morning, birds are active all around, from the tops of the tall cypresses to the shrubs along the…

For small songbirds, surviving a cold winter night can be challenging. Their bodies lose heat faster than those of larger birds. So little birds have found resourceful ways to stay warm — like huddling close together with other birds. But the Verdin, a tiny bird of the Southwest, does…

Attu, at the western end of Alaska’s Aleutian chain, is home to the Rock Ptarmigan. Although grouse are not long-distance fliers, Rock Ptarmigans can cross open water, so they occur from one end of the Aleutians to the other. They are supremely adapted for high latitudes, with thick…

A pint-sized Northern Pygmy-Owl, not much bigger than a pine cone, hoots from a tree-top on a winter morning. Before long, this diurnal owl - a determined predator of small birds and mammals - will attract a mob of a dozen or more small birds. Mobbing may be a collective response to danger…