Volcanic eruptions 66 million years ago played a role in the demise of the dinosaurs, says one theory. It challenges the idea that a meteorite impact was the sole cause.
A new study looks at how birds localize sounds. It seems that their slightly oval-shaped head transforms sound waves in a similar way to external ears.
Big bird news! A consortium of 200 scientists in 20 countries has released its first results on the origins and diversity of birds. Overview plus video here.
Songbirds and other birds sprang from dinosaurs, too. But new work indicates that chickens and turkeys are genetically closest to their dino ancestors.
Audubon Society’s Christmas Bird Count starts December 14 and runs through January 5. It’s free and anyone can participate, but you have to sign up in advance. Here's how.