About Birds Birds are vertebrate animals adapted for flight. Many can also run, jump, swim, and dive. Some, like penguins, have lost the ability to fly but retained their wings.

Birds are warm-blooded vertebrates (vertebrates have backbones) and are the only animals with feathers. Although all birds have wings, a few species can't fly.

50 Birds, 50 States Barry the bald eagle soars from coast to coast to meet state birds and learn about their homes. Each episode is an animated rap music video focusing on the big cities, …

In England, where barn owls often live in graveyards, one of these birds flying by the window of an invalid symbolizes approaching death.

Why is it a ‘dawn’ chorus? But why birds sing in the early morning is still “an open question,” says Mike Webster, an ornithologist at the Cornell Lab of Ornithology.

These noisy birds are often recognizable by their distinctive, loud cry, called a caw. They are often mistaken for the common raven, but ravens are larger, have differently shaped bills, pointed …

How do birds remain immune? Another enduring mystery is how the birds protect themselves from the deadly toxin they carry.

In the hellscape left by the asteroid, what gave the ancestors of modern birds an edge over their Cretaceous cousins? It’s a tough nut to crack, given how rare birds are in the fossil record.

Owls, ospreys, and more!Sea eagles have a pretty amazing way of fighting off intruders! Watch them whirl in this video.

These graceful birds have been the national symbol of the United States since 1782. Bald eagles were on the brink of extinction because of hunting and pollution.