A 115-million-year-old fossilized bird with a pair of long, ribbon-like tail feathers is the oldest bird ever found in Brazil. It was about the size of a hummingbird, and it likely boasted bright ...

Biologists studying tool use in a tropical crow species have fastened tiny video cameras to the birds and recorded their search for food. “We are the first ones to do this on wild birds,” says ...

If you had to describe a male peacock’s tail feathers, you might pick words like “dazzling” or “beautiful.” You probably wouldn’t go with “stealthy,” “aerodynamic,” or “subtle.” Peacock tails are just ...