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

The white-throated needletail was long considered the fastest flier, but the bird, or any other avian, is not. The ...

A secretive creature observed by Darwin has long since been thought extinct, until observers recently spotted a specimen.

Throughout the night, great potoos emit a loud, moaning growl that has earned the bird a mythical status, with some ...