Birdwatching is fun. Having birds in your backyard is even more fun. You don't want the wrong types of bird, though, and ...

The more energy the birds use while flying, the more carbon 13 they expel, in the form of carbon dioxide. Less then remains in their bodies and breath when they are removed from the wind tunnel.

Window collisions are a leading cause of bird deaths, causing up to 3.5 billion bird deaths in the U.S. each year. They're even more common in the fall when both adult birds and their offspring ...