Some bird species of aquatic environments, particularly seabirds and some waterbirds, have further evolved for swimming. The study of birds is called ornithology . Birds are feathered …

Use our Bird Guide to identify birds, learn about the life history, listen to the sounds, and watch bird behavior on video--the most comprehensive guide to Nort

Apr 29, 2025 · Bird, any of the more than 10,400 living species unique in having feathers, the major characteristic that distinguishes them from other animals. They are warm-blooded …

Explore more than 800 North American bird species, learn about their lives and habitats, and how climate change is impacting their ability to survive.

5 days ago · eBird transforms your bird sightings into science and conservation. Plan trips, find birds, track your lists, explore range maps and bird migration—all free.

Detailed information for more than 600 North American bird species, including ID help, browse by shape and taxonomy, and deeper articles.

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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 found worldwide...

Birds of the World is a powerful resource that brings deep, scholarly content from four celebrated works of ornithology into a single platform where biologists and birders can find …

Jan 6, 2018 · On this page you’ll find out all about birds, including how they evolved and what makes a bird a bird. Random bird fact: the world’s most common wild bird is the red-billed …