Bird physiology is conducive to flight: small size, hollow bones, and generally symmetrical feathers on the wings and tail. It seems like a no-brainer that bird evolution was optimized for flight, but ...

Researchers highlighted a recently discovered fossil, which sheds more light on the beginning of birds. This fossil is part of an ancient species called Archaeopteryx, which is considered a link ...

Even the giant wings of the albatross are not "optimally" shaped for their extraordinary long-distance migrations, according to new University of Bristol research. The study, published in Nature ...