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, …

Learn about the dozens of species called birds of paradise. Discover the dramatic, brightly colored plumage that sets them apart from their peers.

New research estimates there are between 50 billion and 430 billion birds on Earth.

Common ravens are actually rather remarkable animals. These sleek, black birds are excellent and acrobatic fliers on par with falcons and hawks.

There are three species of these colorful North American birds. Eastern and western bluebirds have a reddish brown breast, which contrasts with their predominately blue plumage.

Atlantic puffins are birds that live at sea most of their lives. They fly through the air like most birds, but they also "fly" through the water, using their wings as paddles.

From stretched wings to hidden beaks, see striking photographs of birds in their global habitats.

Explore a family tree with more than 350 species. Learn more about these long-lived, intelligent, colorful birds.