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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. Learn more about birds in this article.
Detailed information for more than 600 North American bird species, including ID help, browse by shape and taxonomy, and deeper articles.
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...
birding, and opportunities to help bird conservation. 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.
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.
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.
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 ...
Jul 19, 2023 · Over 400 common bird species live in Michigan’s lovely state. These lovely species thrive in Michigan’s lush forests, meadows, and Great Lakes beaches. Learn about these birds, their unique characteristics, and where to find them in nature.
