A pair of eastern bluebirds. Source: Claudine Lamothe, via Flickr. Distributed under a CC BY-NC 2.0 license. Birdsong is often thought of as a male trait, but new research is changing that idea.

The chirping or singing of birds isn't just a pleasant sound; it has much spiritual significance across cultures and throughout history. Birds usually sing to defend their territory or attract mates, ...

Researchers have tracked muscle contractions in a bird's vocal tract, and reconstructed the song it was silently singing in its sleep. The resulting audio is a very specific call, allowing the team to ...