Over the past half century, researchers have established that birds evolved from dinosaurs: specifically, the theropods, the ...

Hummingbirds are unique among birds for numerous reasons, and that also includes their backward flying capability. Like ...

A plump guinea fowl walks across a bird-sized treadmill. X-rays record the precise movement of the bird's bones, tracking its hips as they interact with its legs. A computerized model of the bones is ...