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What Is a Bird?

Birds are warm-blooded creatures, like mammals, but they lay eggs, like most reptiles. All birds have feathers and wings, and most birds are able to fly. Birds are amazingly varied in their shapes, sizes, colors, and behavior patterns. There are more than 9,000 different species of birds in the world.

• How Does a Bird Fly?
• Bringing Up Chicks
• Why Do Birds Sing?
• Where Do Birds Lay Their Eggs?
• What Makes a Bird a Bird? Feathers!

Name	Type
American Crow	Backyard Birds
American Goldfinch	Backyard Birds
American Robin	Backyard Birds
Baltimore Oriole	Backyard Birds
Belted Kingfisher	Backyard Birds
Black-billed Magpie	Backyard Birds
Black-capped Chickadee	Backyard Birds
Blue Jay	Backyard Birds
Brown-headed Cowbird	Backyard Birds
Bullock's Oriole	Backyard Birds
Cedar Waxwing	Backyard Birds
Common Raven	Backyard Birds
Common Yellowthroat	Backyard Birds
Eastern Bluebird	Backyard Birds
Eastern Meadowlark	Backyard Birds
Eastern Phoebe	Backyard Birds
European Starling	Backyard Birds
Evening Grosbeak	Backyard Birds
Golden-crowned Kinglet	Backyard Birds
Horned Lark	Backyard Birds
House Finch	Backyard Birds
House Sparrow	Backyard Birds
House Wren	Backyard Birds
Indigo Bunting	Backyard Birds
Mountain Bluebird	Backyard Birds
Northern Cardinal	Backyard Birds
Northern Mockingbird	Backyard Birds
Red-breasted Nuthatch	Backyard Birds
Red-eyed Vireo	Backyard Birds
Red-winged Blackbird	Backyard Birds
Scarlet Tanager	Backyard Birds
Song Sparrow	Backyard Birds
Spotted Towhee	Backyard Birds
Steller's Jay	Backyard Birds
Tree Swallow	Backyard Birds
Tufted Titmouse	Backyard Birds
Western Kingbird	Backyard Birds
Western Scrub-Jay	Backyard Birds
Western Tanager	Backyard Birds
Yellow Warbler	Backyard Birds
Yellow-rumped Warbler	Backyard Birds
California Quail	Ground Birds
Common Nighthawk	Ground Birds
Greater Prairie-Chicken	Ground Birds
Greater Roadrunner	Ground Birds
Mourning Dove	Ground Birds
Northern Bobwhite	Ground Birds
Ring-necked Pheasant	Ground Birds
Rock Dove	Ground Birds
Whip-poor-will	Ground Birds
Wild Turkey	Ground Birds
American Kestrel	Hawks Eagles and Vultures
Bald Eagle	Hawks Eagles and Vultures
Cooper's Hawk	Hawks Eagles and Vultures
Northern Harrier	Hawks Eagles and Vultures
Osprey	Hawks Eagles and Vultures
Peregrine Falcon	Hawks Eagles and Vultures
Red-shouldered Hawk	Hawks Eagles and Vultures
Red-tailed Hawk	Hawks Eagles and Vultures
Sharp-shinned Hawk	Hawks Eagles and Vultures
Turkey Vulture	Hawks Eagles and Vultures
Anna's Hummingbird	Hummingbirds
Broad-tailed Hummingbird	Hummingbirds
Ruby-throated Hummingbird	Hummingbirds
Rufous Hummingbird	Hummingbirds
Barn Owl	Owls
Barred Owl	Owls
Burrowing Owl	Owls
Eastern Screech-Owl	Owls
Great Horned Owl	Owls
Short-eared Owl	Owls
Adelie Penguin	Seabirds
Black Skimmer	Seabirds
Common Murre	Seabirds
Common Tern	Seabirds
Emperor Penguin	Seabirds
Herring Gull	Seabirds
Laughing Gull	Seabirds
Magnificent Frigatebird	Seabirds
Rockhopper Penguin	Seabirds
Royal Tern	Seabirds
Tufted Puffin	Seabirds
American Oystercatcher	Shorebirds
American Woodcock	Shorebirds
Common Snipe	Shorebirds
Greater Yellowlegs	Shorebirds
Killdeer	Shorebirds
Sanderling	Shorebirds
American Coot	Swimming Birds
American Wigeon	Swimming Birds
Anhinga	Swimming Birds
Brown Pelican	Swimming Birds
Bufflehead	Swimming Birds
Canada Goose	Swimming Birds
Common Goldeneye	Swimming Birds
Common Loon	Swimming Birds
Double-crested Cormorant	Swimming Birds
Horned Grebe	Swimming Birds
Mallard	Swimming Birds
Pied-billed Grebe	Swimming Birds
Red-throated Loon	Swimming Birds
Snow Goose	Swimming Birds
Tundra Swan	Swimming Birds
Wood Duck	Swimming Birds
Glossy Ibis	Wading Birds
Great Blue Heron	Wading Birds
Great Egret	Wading Birds
Green Heron	Wading Birds
Roseate Spoonbill	Wading Birds
Sandhill Crane	Wading Birds
Wood Stork	Wading Birds
Downy Woodpecker	Woodpeckers
Northern Flicker	Woodpeckers
Pileated Woodpecker	Woodpeckers
Yellow-bellied Sapsucker	Woodpeckers

Most birds... have two wings, two legs and a beak are covered with feathers are warm-blooded give birth to babies hatched from eggs

Most birds are the same in many ways. But there are differences, too. Some birds spend their whole lives in a warm or a cold part of the world.

Other birds, though, fly to warmer areas when the weather gets chilly. Some birds, even though they have wings, can't fly at all.

And there are birds that can swim in the water!