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

For centuries, researchers have pondered how starlings travel in those gorgeous shape-shifting clouds. The answers continue to surprise them.

WHITE PELICANS (Pelecanus erythrorhynchos) are a normal springtime sighting of big birds as the spring season continues to ...

Study in Evolution journal compares flightless bird evolution, revealing how feathers and bodies change when birds lose flight ability.