Like their airborne mammalian idols, echolocation helps oilbirds to find their way in the darkness of caves, but in contrast ...

Birds usually have a prominent breast keel where heavy muscles are attached; in bats, only one muscle is attached to the breastbone, the ribs are flattened, and there is some fusing of the vertebral ...

Researchers may have just found the answer: Unlike birds, the evolution of bats' wings and legs is tightly coupled, which may ...