The Earth is home to an incredible diversity of bird species, living in practically every habitat, from the open oceans to the arid deserts. In some parts of the world, these animals have adapted and ...

With their distinctive spiky yellow eyebrows and bouncing movement up steep cliffs, these feisty little penguins are true daredevils of the Southern Ocean. The Southern Rockhopper Penguin is a small, ...

Browse our growing list of species guides to learn all about birds.

Browse our growing list of species guides to learn all about birds.

Discover the extraordinary achievements and unique characteristics of these remarkable birds.

Despite their incredible diversity in shape, color, and size, most people find it easy to distinguish birds from other vertebrate classes like mammals and reptiles. The tiny, jewel-like Hummingbird is ...

Browse our growing list of family guides to learn all about them. Showing 85-95 of 95 birds ...

Browse our growing list of species guides to learn all about birds.

The avian endocrine system consists of a series of glands that produce and secrete substances known as hormones. These steroids or proteins travel through the bloodstream and act as chemical ...