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…

During winter, the Greater Sage-Grouse is wholly reliant on its namesake species — sagebrush — for both shelter and for food. Scientists call this bird "sagebrush obligate," meaning it needs this plant to survive. In the spring, its diet shifts to insects and plants, as it gets ready for…

Go outside this weekend. Feel the wind in your hair. Listen to a bird. Discover a new park. Then get involved! Volunteer to lead your own bird walk. Participate in a bird count or cleanup. Or maybe you’re more comfortable around a laptop – lots of local parks and environmental nonprofits…

The two American species of dowitchers, Long-billed and Short-billed, are similar in appearance but have distinctive calls. And they’re some of the continent’s most dramatic songsters. On their northern breeding grounds, Short-billed Dowitchers ascend as high as 150 feet in the air then…

The shallow waters and wide mudflats of the Bolivar Flats Shorebird Sanctuary northeast of Galveston, Texas, are alive with thousands of gulls, terns, and shorebirds. American Avocets are often among the most abundant birds, with 5,000 or more here most winters. The avocets have sensitive…

You may see Dark-eyed Juncos in the summer, but come fall, many more — those that have been nesting in the mountains or farther north — arrive to spend the winter. These juncos often visit birdfeeders for winter feasting. Dark-eyed Juncos forage on the ground. The flash of white tail…

Consider three species of raptors: the Barn Owl, Peregrine Falcon, and Osprey. They’re on every continent except Antarctica. Each has a specialized hunting prowess distinct from the other. They can fly great distances. And like many birds of prey, they mate for life. The Barn Owl, pictured…

Birdfeeders full of seeds or suet can spark nonstop action. Chickadees flitter in and out. Finches expertly crack one seed after another, while jays, doves, woodpeckers and sparrows all join the flurry. This might bring to mind a neighborly picnic — but it’s not quite as friendly. At any…

There are two kinds of pelicans in North America – the American White Pelican and the Brown Pelican. And they’ve evolved different tactics to catch their prey.