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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.
eBird transforms your bird sightings into science and conservation. Plan trips, find birds, track your lists, explore range maps and bird migration—all free.
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 · Learn about birds, the only living animals with feathers, from Britannica. Explore their evolution, diversity, behavior, ecology, and cultural significance.
Explore the diversity and adaptability of birds with stunning photos, videos, and stories. Learn about their anatomy, evolution, behavior, and conservation.
Identifica las aves que ves y escuchas con Merlin Bird ID. Guía de aves del mundo, gratis, con fotos, sonidos, mapas y más.
