ALBATROSSES: Very large seabirds with long, narrow, pointed wings. Often soar in stiff-winged flight, with slow wingbeats; swim and feed at surface.
ANIS: Black relatives of cuckoos with flattened, parrotlike bills and long, rounded tails. Flap and coast in loose-winged flight.
AUKS: Stocky seabirds with large heads and short wings; some have facial plumes; bill variable, and parrotlike in puffins. Posture often vertical. Swim and dive from surface; fly with rapid wingbeats.
•BLACKBIRDS: Mainly black, sparrow to pigeon sized birds that walk on ground, fly in bunches, and often mob predators.
•BLUEBIRDS: Sparrow-sized thrushes with blue plumage and slender bills. Often perch with tail pointed downward.
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BOOBIES AND GANNETS: Goose-sized to very large seabirds with stout, spear-shaped bills and long, narrow, pointed wings. Fly in beeline with slow wingbeats; dive for fish from air.
•BUNTINGS: Brightly or boldly colored birds with short, conical bills; females greenish or brown.
•CHICKADEES: Sparrow-sized birds with dark crowns, black throats, and white cheek patches. Forage rapidly in foliage and often hang upside down from twigs.
CHICKENLIKE BIRDS: Stocky, ground-dwelling birds with small heads; often with crest, head or neck plumes, or combs; bill chickenlike; wings broad and rounded. Walk or run; flush with rapid wingbeats. The very large Wild Turkey belongs to this group.
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The 62 bird groups described here are informal groups of North American birds whose members clearly resemble one another in behavior, shape and posture, or color and pattern. These groups do not always correspond to families and subfamilies. Not all of these groups are represented in the Eastern United States.