Birds are often associated with flight, but not all of them take to the skies. Around 60 species — fewer than 1% of all bird ...

The Bearded Vulture is a unique bird that specialises in eating bone marrow by breaking bones and swallowing them whole ...

Airplane wings are modeled after bird wings. The bones and muscles of the wing are also highly specialized. The main bone, the humerus, which is similar to the upper arm of a mammal, is hollow ...

When vertebrates moved onto land, long ago, some of them eventually became airborne, way after the insects did. There are ...

The bones comprising them were relatively long compared to those of related dinosaurs, and they were partially fused together. In modern birds, these bones are totally fused and, due to their ...

Evidence of avian beginnings has been elusive in the fossil record because birds' light, hollow bones rapidly decompose ... But the creature also had wings and bore feathers -- certainly birdlike ...