Birds are a group of warm-blooded vertebrate animals constituting the class Aves, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four …

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

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

Nov 2, 2025 · Hear the sounds of 175 US bird species I filmed over the last 3 and a half years! In this video you can hear multiple songs and calls from North American birds, including their regional...

All About Birds is your free online guide to birds and bird watching. Explore in-depth species information, tips from the Lab’s experts, and inspirational v ...

May 4, 2026 · Bird, any of the approximately 11,200 living species unique in having feathers, the major characteristic that distinguishes them from other animals. They are warm-blooded vertebrates more …

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

Mar 3, 2026 · This guide introduces the most common backyard birds of the Midwest with simple identification tips, general bird knowledge and species-by-species photos—perfect for beginners, …

May 6, 2025 · Birds are warm-blooded vertebrates characterized by feathers on their bodies, toothless beaked jaws, hard-shelled calcareous eggs, and a four-chambered heart with a high rate of metabolism.

Explore the world of birds, from tiny hummingbirds to majestic eagles. Discover species from every continent. Strut, gobble, and soar-wild-born. 27 birds in our database face conservation challenges. …