Some bird species of aquatic environments, particularly seabirds and some waterbirds, have further evolved for swimming. The study of birds is called ornithology.

2 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.

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

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Jan 24, 2026 · Bird, any of the approximately 11,200 living species unique in having feathers, the major characteristic that distinguishes them from other animals. They are warm-blooded vertebrates more …

The new illustrated Birds of the World Phylogeny Explorer lets users trace any bird’s lineage, compare species relationships, and explore major evolutionary milestones with a click of a button.

The smallest is the two-inch-long bee hummingbird. Everything about the anatomy of a bird reflects its ability to fly. The wings, for example, are shaped to create lift.

May 24, 2019 · Discover the main types of birds, from common groupings like birds of prey and water birds to the 40 scientific bird orders. Explore examples, classification, and bird diversity worldwide.

May 6, 2025 · The most common anthropogenic threat to bird diversity is the constant degradation and loss of natural habitats. Other threats include long-line fishing bycatch, overhunting, competition from …

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