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Birds are a group of warm-blooded vertebrates constituting the class Aves ( / ˈeɪviːz / ), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.
Explore more than 800 North American bird species, learn about their lives and habitats, and how climate change is impacting their ability to survive.
Jul 27, 1999 · 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 vertebrates more related to reptiles than mammals.
About Birds. 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...
1 day ago · The feat moved the species from a “critically endangered” classification to “endangered” and, Fritz says, is the first attempt to reintroduce a continentally extinct migratory bird species. A group of northern bald ibises are being guided by a microlight across central Europe in a pioneering form of assisted migration.
Detailed information for more than 600 North American bird species, including ID help, browse by shape and taxonomy, and deeper articles.
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 comprehensive life history information on birds. Every bird has a story. Discover them all with Birds of the World. About Birds of the World; Team; Subscribe
The Cornell Lab is powered by science, technology, and millions of people around the globe—people like you. eBird Status and Trend Maps reveal how birds are faring across continental scales. Explore the map for. and help create a future where birds, nature, and people can thrive.
Identify the birds you see or hear with Merlin Bird ID. Free global bird guide with photos, sounds, maps, and more.
Visit our free online bird guide. And to learn more about the incredible feat that is bird migration, follow the paths of more than 450 species with our Bird Migration Explorer.
