Many species of songbirds have evolved to have strikingly colorful plumage, aiding them in catching the eye of mates, ...

A tiny, overlooked wrist bone called the pisiform may have played a pivotal role in bird flight and it turns out it evolved far earlier than scientists thought. Fossils from bird-like dinosaurs in ...

From a predator’s perspective, these features create an illusion of a second head at the rear of the butterfly. If the attack ...