- Bird - Wikipedia
There are over 11,000 living species and they are split into 44 orders More than half are passerine or "perching" birds Birds have wings whose development varies according to species; the only known groups without wings are the extinct moa and elephant birds
- Guide to North American Birds | Audubon
Guide to North American Birds Explore more than 800 North American bird species, learn about their lives and habitats, and how climate change is impacting their ability to survive
- Online bird guide, bird ID help, life history, bird . . . - All About Birds
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
- Bird Pictures Facts - National Geographic
Birds are found worldwide and in all habitats The largest is the nine-foot-tall ostrich The smallest is the two-inch-long bee hummingbird Everything about the anatomy of a bird reflects its
- Birds of the World - Cornell Lab of Ornithology
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
- American Bird Conservancy
Our team works to understand the various threats to birds, find strategies to mitigate them, and build a bird conservation movement that will make the world safer for birds and their habitats
- Bird | Description, Species, Feathers, Facts | Britannica
bird, (class Aves), any of the more than 10,400 living species unique in having feathers, the major characteristic that distinguishes them from all other animals
- Cornell Lab of Ornithology—Home | Birds, Cornell Lab of Ornithology
We believe birds are a gateway to caring for the natural world Help us spark curiosity and foster learning, starting with the earliest ages, through the college years, and lasting a lifetime
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