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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.
Patagonian Yellow-Finch Sicalis lebruni. Last observed by Felipe de Groote Páez on 18 May 2024. American Golden-Plover Pluvialis dominica. Last observed by Bianca Guggiana N. - Emplumados_ on 25 May 2024. Red Knot Calidris canutus. Last observed by Pablo Martinez Morales on 4 May 2024. Dot-winged Crake Porzana spiloptera.
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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
22 de jun. de 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.
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...
Identifica las aves que ves y escuchas con Merlin Bird ID. Guía de aves del mundo, gratis, con fotos, sonidos, mapas y más.
