Birds like this mourning dove use oils from preen glands to make their feathers waterproof. Water runs off their wings and ...

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

funerals and graduations and then fly back to their home. The birds are homing pigeons, which are closely related to rock doves and some biblical scholars say the two are synonymous.