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 …

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.

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...

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

Dec 17, 2025 · bird, (class Aves), any of the approximately 11,200 living species unique in having feathers, the major characteristic that distinguishes them from all other animals.

All About Birds is an online guide to birds and bird watching, produced by the Cornell Lab of Ornithology. It has information about over 700 North American species—helping users identify …

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 …

4 days ago · eBird transforms your bird sightings into science and conservation. Plan trips, find birds, track your lists, explore range maps and bird migration—all free.

In this list of birds by common name 11,250 extant and recently extinct (since 1500) bird species are recognised. [1] Species marked with a dagger are extinct; a single "†" means the species …

Jul 8, 2025 · In addition to being one of the largest cities in the United States, New York City is also home to a huge range of birds, including backyard birds, birds of prey, and much more!