Among birds with white heads, the Ross’s gull lives in Antarctica and very rarely visits North America. In breeding season, these birds have white feathers that are dusted with light gray.

Mourning doves’ population is dropping, while white-wings are increasing their territory. Both species engage in wing raising to intimidate other birds eating at feeders. ( iStock ) Mourning ...

Flocks of these doves, with large white wing patches, and short square-ended tails, are a common sight in summer in many areas near the Mexican border. Polytypic. Length 11". A little larger than ...

Aside from the weapon wings, Longrich and colleagues are most curious about the ultimate fate of the prehistoric birds. Fossils indicate Xenicibis lived at least as recently as 12,000 years ago.

To build the model, the scientists first put tiny dabs of non-toxic white paint at nine places on a ruby-throated hummingbird's wing. They then took high-speed video at 1,000 frames per second ...

Two tiny bird wings were encased in amber. They were 99 million years old, but they looked as though they could take flight any minute: delicate bones were arched in the middle of the wings and ...