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 …

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

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

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 …

The exclusive relaxing bird sounds accompanied by this magnificent collection of birds proposed in this work will help to beat anxiety and stress.

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

Join us and help create a future where birds, nature, and people can thrive. We believe that people make the difference in every conservation challenge. Through participatory science projects, …

Discover what types of birds are found in the USA, with pictures and charts about native and introduced birds. What is the country's national bird, and more.

Explore the world of birds, from tiny hummingbirds to majestic eagles. Discover species from every continent. Mahogany birds, brown eggs, all grit. 27 birds in our database face conservation …

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.