Passerine birds, also known as perching birds, that migrate by night tend to fly faster in spring than they do in autumn to reach their destinations. This seasonal difference in flight speed is ...

Spring is an important time of year for birds to get cracking laying eggs and raising chicks. But first things first they need to build their nests. Each species of bird brings its own style to its ...

Billions of migratory birds pass through the night sky each spring and fall. Birds use stars to orient their journey between summer breeding grounds and winter feeding grounds. The artificial lights ...