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American Dipper: Small, wren-like bird, dark gray with short, cocked tail, white eyelids that flash when blinked. Straight black bill. Wades, swims and dives for food. Feeds on aquatic insects, larvae, clams, snails, crustaceans, and small fish. Strong direct flight on rapid wing beats.
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American Redstart: Medium, active warbler with black upperparts and hood, distinctive orange-red patches on wings, sides, and long, fanned tail, and white underparts. Bill, legs, and feet are black. It frequently flashes its colorful wings and tail to flush insects from foliage.
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American Tree Sparrow: Medium, gray-brown sparrow, black and rufous-brown streaks on back, wings. Crown, eyestripes, flanks are rufous-brown, contrasting with gray face. Pale gray breast with dark central spot, rufous-brown sides. Upper mandible is dark gray, lower mandible is yellow.
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Alder Flycatcher: Small flycatcher with olive-brown upperparts, white underparts, and indistinct white eye-ring. Wings are olive-brown with two white or pale bars. Bill is short with orange lower mandible. Black legs and feet. Weak fluttering direct flight with shallow, rapid wing beats.
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Arctic Tern: Medium, slim tern with gray upperparts, black cap, white rump and throat, and pale gray underparts. Tail is deeply forked and white with dark edges on outer feathers. Bill is dark red, rarely tipped with black. Legs and feet are red. Bouyant graceful flight with steady wing beats.
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Asian Brown Flycatcher: Small gray-brown flycatcher with white underparts, gray-brown wash on sides, breast. Long gray-brown wings have faint, pale wing bar. Black bill with creamy pink base to lower mandible. Gray face has a white buff eye-ring, lores. Dark gray tail has white undertail coverts.
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Aleutian Tern: A medium tern, with white forehead, black cap, bill, and legs, gray under and upperparts, white rump and tail. Undertail coverts, cheeks, and area below cap are white. Wing projects beyond tip of tail at rest. Strong direct flight with deep wing beats, often high above water.
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American Three-toed Woodpecker: Medium woodpecker with black-and-white barred upperparts, black head, yellow crown, white eye-line, throat, breast, and belly, and diagonally barred white flanks. Wings are black with white spots; rump is black; tail is black with white outer feathers.
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American Crow: Large, black bird with dark, stout bill, iridescent violet gloss on body, and blue-black wings. Tail is fan-shaped in flight. Eats insects, small invertebrates, amphibians, reptiles and mammals, eggs and young of other birds, grains, fruits, refuse, and carrion. Steady direct flight.
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Anna's Hummingbird: Medium hummingbird; male has bronze-green upperparts, dull gray underparts. Hood and throat are iridescent red, may appear black or dark purple in low light; broken white eye-ring is usually visible. Tail is dark green with black outer tail feathers. Feeds on nectar, insects, spiders, and sap.
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American Bittern: Medium, secretive, heron-like wading bird with stout body and neck, and relatively short legs. Upperparts are streaked brown and buff and underparts are white with brown streaks. Throat is white with black slashes on sides of neck. Strong direct flight with deep rapid wing beats.
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American Wigeon: Medium dabbling duck, brown body with white crown, large green ear patch extending to back of head, buff washed breast and sides, and white belly. White shoulder patches visible in flight. Black-tipped pale blue bill. Swift direct flight, strong wing beats. Flies in tight flocks.
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American Kestrel: Smallest North American hawk, has two distinct black facial stripes, rust-brown tail and back, slate-blue wings, black-spotted underparts. Eats bats, rodents, insects, frogs, small reptiles, and birds. Alternates several rapid wing beats with glides, also hovers. Soars on thermals.
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American Coot: Medium-sized, chicken-like swimming bird, dark gray to black overall, short, white bill and undertail coverts. Toes are lobed, not webbed. Upper edge of frontal shield is red, but usually only visible at close range. Swift direct flight with rapid wing beats, feet protrude past tail.
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Arctic Loon: Medium loon with straight, stout bill, white-spotted black back, white flanks visible above water while swimming. Head and nape are gray. Neck has bold black and white stripes on sides and green or purple throat bar that may be difficult to see. Feeds on fish, mollusks, and crustaceans.
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Arctic Warbler: Medium-sized, active warbler with stout bill, olive-green back, olive-brown sides, and white throat and belly. Dark eye-lines contrast with pale yellow eyebrows curving upward behind eyes. Wings have faint pale bar on tips of greater coverts. Tail is square. Pale yellow legs, feet.
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American Golden-Plover: Medium sandpiper with black face, underparts. Back is dark brown with yellow spots; has a white S-shaped mark along head and sides. Markings provide camouflage to blend in with tundra breeding grounds. Bill is black, thin, and short. Swift direct flight on rapid wing beats.
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American Robin: Large, familiar North American thrush, gray-brown upperparts, rich red-brown breast, and white lower belly and undertail coverts. Head appears black with white splotches surrounding the eyes, and throat is white with black streaks. Swift, direct flight on rapidly beating wings.
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Ancient Murrelet: Small, pelagic seabird with black head and dark gray back and wings. White underparts extend up onto the face as a cheek patch. Bill is short and yellow with a blackish tip. An open ocean species vaguely resembling a small penguin that can fly. Swift, direct, and low flight.
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American Pipit: Small pipit, gray-brown upperparts and pale buff underparts; breast is faintly to darkly streaked. Tail is dark with white edges. Black bill is thin and long. Legs and feet are black. It can be distinguished from sparrows by its longer bill and habit of wagging its tail up and down.
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