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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.
All News. All Webinars. 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.
eBird is a project of the Cornell Lab of Ornithology and is supported entirely by grants, sponsors, and donations. eBird transforms your bird sightings into science and conservation. Plan trips, find birds, track your lists, explore range maps and bird migration—all free.
Hace 5 días · 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.
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 ...
traducir BIRD: ave, pájaro, chica, volante, pájaro [masculine]. Más información en el diccionario inglés-español.
Birds are found all over the world and are one of the most well-studied groups of animals. As such, they act as an early warning system for the state of the planet as a whole. Changes in bird populations show us where habitats are being degraded, where climate change is taking its toll, and where action is needed most.
