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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.
Jun 22, 2024 · 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.
Bird is a well-respected builder in the Canadian construction industry focused on growth, diversification, and profitability. Publicly traded for over 70 years, we focus on executing challenging projects that take advantage of the technical strength of the company and our talented employees in order to generate superior and sustainable ...
Explore more than 800 North American bird species, learn about their lives and habitats, and how climate change is impacting their ability to survive.
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
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...
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 ...
eBird transforms your bird sightings into science and conservation. Plan trips, find birds, track your lists, explore range maps and bird migration—all free.
Browse North American birds by shape—helpful if you don’t know exactly which type of bird you’ve seen.
