In a dramatic and sometimes deadly aerial ballet, a Peregrine Falcon dives on a flock of Dunlins. Seeking escape, the shorebirds flash white and dark, rippling through the sky. This dance has changed dramatically since the banning of the pesticide DDT in 1973. As the number of peregrines…

Migratory birds connect the Northern Plains with many parts of the Western Hemisphere. Barn and Cliff Swallows, Thick-billed Longspurs, this Lark Bunting, and many other birds winter from Central to southern South America. But their reproduction depends on the bounty of the prairie spring…

Blackpoll Warblers make the longest migration of any North American songbird, an annual round trip of eleven to twelve thousand miles. In August, the warblers leave Western Alaska and head east across Canada to the Maritime Provinces and the coast of New England. Then, the tiny songbirds…

In spring, raptors like this Ferruginous Hawk and hundreds of other bird species migrate north along the front range of the Rocky Mountains. Some songbirds, such as the Bullock’s Oriole, stop to nest along the Cache La Poudre River as it flows through Fort Collins, Colorado. On May 11…

September 2007 - The last 40 years have witnessed the dramatic decline of many common American birds, including Boreal Chickadees, like this one. New York Times essayist Verlyn Klinkenborg writes, "...we seem determined to discover whether we can live alone on earth. Harvard biologist, E.O…

Dawn breaks over grassland in the northern Midwest and a dozen male Sharp-tailed Grouse, gathered closely together, face one another in a rough circle. Suddenly, as if in response to a movie director's call for "Action!" the grouse snap into a dance posture. Each bows, holds his wings…