This tenacious ground-dweller from Southeast Asia's dense forests combines olive-brown plumage with its signature bright green legs. The Green-legged Partridge is a medium-sized ground bird with ...

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

Have you ever noticed how much more abundant birds are in the summer than in the winter? Starting in the spring, many birds arrive back at their breeding grounds in North America to enjoy the warm ...

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

Known for its stunning crimson and green plumage, this vibrant parrot lights up gardens and rainforest edges across eastern Australia. The Australian King-parrot is a striking medium-sized parrot with ...

Browse our growing list of family guides to learn all about them.

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, ...

Apart from the unusual monotreme mammals of Australia, the combination of internal fertilization, oviparity (egg-laying), and advanced parental care is unique to avians. From flashy feathers and ...

There are roughly ten thousand bird species on earth, all with their own particular diet and feeding behaviors. They range from specialized feeders associated with specific plant species to ...

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 ...

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 ...