More than 170 species of North American wild birds were infected with bird flu. Here's what it means for your backyard bird ...

Glacier-carved fields and ephemeral wetlands provide a crucial stopover for long-distance migrants and prolific breeding ...

State of the Birds Report highlights the urgent need for conservation as North American bird populations continue to fall.

The massive annual spring migration of America's birds – millions of them – is underway. Here's how to follow along at home.

Songbirds such as Northern cardinals, blue jays or chickadees — the kind of birds that might visit bird feeders — can also ...

At least 112 North American bird species have lost more than half their populations in the past 50 years, according to a new ...

A study compiled data from more than 76,000 butterfly surveys across the continental U.S. The declines seen in the last 20 ...

In North America, birds typically fly south for the winter ... These are often shorebirds. Species include many types of warblers, the western tanager and the snow bunting. Long-distance ...