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.

Looking across the assortment of birds featured here, you’ll notice that each species is vastly different from the others, either in color, shape, or feather arrangement.

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

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, history, …

The ostrich is the tallest and the heaviest of all birds. While the huge ostrich is a bird, it does not fly. Instead it runs. One stride can cover up to 16 feet (4.9 meters)—about the length of a mid-size family …

Before descending to their nighttime roosts, the birds put on one of nature’s most spectacular displays.

Owls, ospreys, and more! Every year, millions of flamingos come to Kenya's Lake Bogoria to feed. See what happens when this swarm pushes the lake to the breaking point.

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.

Some birds may become more aggressive because cities are rich in food sources—and so there’s strong competition to establish a foothold.