Bird - Wikipedia Some bird species of aquatic environments, particularly seabirds and some waterbirds, have further evolved for swimming The study of birds is called ornithology Birds are feathered dinosaurs , having evolved from earlier theropods , and constitute the only known living dinosaurs
Guide to North American Birds | Audubon Explore more than 800 North American bird species, learn about their lives and habitats, and how climate change is impacting their ability to survive
Bird | Description, Species, Feathers, Facts | Britannica 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
eBird - Discover a new world of birding. . . eBird transforms your bird sightings into science and conservation Plan trips, find birds, track your lists, explore range maps and bird migration—all free
Bird Pictures Facts - National Geographic 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 found worldwide
Cornell Lab of Ornithology—Home eBird Status and Trend Maps reveal how birds are faring across continental scales Explore the map for Baltimore Oriole Join us and help create a future where birds, nature, and people can thrive We believe that people make the difference in every conservation challenge
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 Every bird has a story Discover them all with Birds of the World