As winter closes in across much of North America, migratory birds are heading south to warmer climes and more abundant food.

Every spring, the familiar songs of Wood Thrushes and warblers return to the parks and backyards of eastern North America.

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A recent study found that these endangered areas are home to up to 46% of the global populations of 40 species that nest in ...

A new study shows that the "Five Great Forests" sustain billions of migratory birds, shaping spring across the Americas.

Climate change is shrinking our birds. Birds in both North and South America are getting smaller as the planet warms, and the smallest-bodied species are changing the fastest, a study reported Monday.

Over 30 million birds are expected to land somewhere in Wisconsin on Friday morning after unpredictable weather conditions during this migration season have created an unprecedented peak this year.

Migratory birds that fill North American forests with spring songs depend on Central America’s Five Great Forests far more ...

Just after dawn in Washington, D.C., Stephanie Haley is walking a familiar downtown route, scanning the sidewalk next to office buildings. There, huddled on the ground, is a motionless olive-green ...

A Haast’s eagle attacks a moa pair. John Megahan, PLOS Biology, 3(1): e20 via Wikipedia under CC By 2.5 Evolution has a fondness for big birds. During the past 66 million years, repeated on different ...

Cooler temperatures this week are giving Michiganders a break from air conditioning and a chance to pull out their fall sweatshirts. For birds, it’s migration time — with more than 3.6 million birds ...