Tips for using Browse:

Browsing is a valuable way to learn about birds, however it is a brute force approach and not designed for identification. A more sophisticated approach to finding a bird with specific field marks is to use the Step by Step Search. You can also try the Wizard to find a bird, which uses a question and answer approach, but again it does not give you the flexibility of the Step by Step Search.

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Caspian Tern
Caspian Tern: This large stocky tern has pale gray upperparts and white underparts. The cap is black and may appear weakly crested. The large bill is coral-red, the undersides of the primaries are gray, a short white tail is slightly forked, and the legs are black. The flight is strong, swift and graceful. It hovers above water before diving and mainly feeds on fish. The sexes are similar.
Common Gallinule
Common Gallinule: Medium, chicken-like marsh bird with gray-brown back and slate-gray head, neck, breast, and belly. Upper flanks show distinct white line. Yellow-tipped red bill is short with red frontal plate extending onto forehead. Tail is white below. Long legs and unwebbed feet are yellow-green.
Common Tern
Common Tern: This medium-sized tern has medium gray upperparts, pale gray underparts and a glossy black cap and nape. The wings are dark-tipped with a dark leading edge on the forewing. The red bill is black-tipped, legs are red, and the tail is deeply forked and elongated. It has a direct flight, hovering above water before diving for prey. Feeds mainly on small marine fish. Sexes are similar.
Curlew Sandpiper
Curlew Sandpiper: This is a medium-sized sandpiper with mottled rufous, white and black upperparts. The head, neck and breast are a rich rufous, while vent, under tail coverts and underwings are white. It has a long black bill that is slightly decurved, and black legs and feet. It mainly feeds on insects and other small invertebrates. Swift direct flight with rapid wing beats. Sexes are similar.
Cerulean Warbler
Cerulean Warbler: The male is sky-blue with faintly streaked upperparts and black-streaked white flanks. A black band separates a white throat and belly. Wings have two bold white bars. The female has unstreaked blue-gray upperparts and a yellow wash on face and breast with pale streaks on flanks, and yellow eyebrows. The immature bird is paler and more olive over all. Prefers to stay high in the crowns of mature deciduous trees, making it difficult to see.
Common Grackle
Common Grackle: Medium-sized blackbird with metallic purple sheen on back, head, neck, and breast. Eyes are bright yellow. Central feathers of long, rounded tail are often lowered to show keeled V-shape. Swift, strong direct flight with rapid wing beats, holds tail folded in a V shape while flying.
Chuck-will's-widow
Chuck-will's-widow: Large nightjar with entire body complexly mottled with brown, gray, and black. Collar is white, throat is brown, and breast patch is dark brown. The tail is white-edged. Legs and feet are brown. Feeds at night, mostly on insects. Bouyant, silent flight with flicking wing beats.
Canada Warbler
Canada Warbler: Small warbler with slate-gray upperparts, bright yellow underparts, black-streaked necklace, and white vent. The eye-ring is yellow to white. Bill is gray. Pink legs and feet. Skulks in low, dense undergrowth beneath mixed hardwoods. Direct flight with quick, fluttering wing beats.
Cinnamon Teal
Cinnamon Teal: This small duck has scaled dark brown upperparts, cinnamon-brown underparts, head and neck, red eyes, long dark bill and yellow-gray legs. White line divides green speculum and pale blue shoulder patch on wing. Female is brown-scaled overall with dull blue shoulder patch, dark eyes and pale edged upper mandible. Feeds on seeds and insects. Swift direct flight with rapid wing beats.
Common Merganser
Common Merganser: Large, sleek diving duck with black upperparts and white underparts. Head and upper neck are green-black with head crest usually not visible. Long, thin bill is bright red. Wings are black with extensive white patches. Feeds on fish, mollusks, crustaceans, insects and plants.
Common Nighthawk
Common Nighthawk: Medium nightjar with white-speckled, dark upperparts, black-and-white barred underparts, mottled breast, white throat. Wings are long, dark gray with white bars, nearly covering tail when folded. Gray-brown legs and feet. Darting erratic flight with frequent changes of direction.
Common Poorwill
Common Poorwill: Small, stocky nightjar with pale brown mottled body and white collar separating black throat from narrowly barred underparts. Wings are rounded and tail is short and fan-shaped with outer tail feathers tipped white. Pink-brown legs and feet. Silent flight on quick shallow wing beats.
Common Redpoll
Common Redpoll: Small finch, brown-streaked gray upperparts, bright rose-pink breast, boldly streaked flanks and undertail coverts. Red cap and black chin. Bill is olive-brown with fine black tip. Wings are dark with two narrow white bars; tail is black and notched. Black legs, feet.
Carolina Wren
Carolina Wren: Medium-sized wren with rufous upperparts and buff underparts. Eyebrows are white, wings and tail are dark barred with white flecks. Throat and chin are white. Bill is decurved. Legs and feet are pink-gray. Range expands north when winters are mild and retracts south when harsh.
Curve-billed Thrasher
Curve-billed Thrasher: Medium-sized thrasher (palmeri), with gray upperparts and spotted, pale gray underparts. Eyes are orange-red and bill is long and decurved. Tail is long and dark gray. Legs and feet are black. Feeds on insects, spiders, small reptiles, fruits, seeds and berries.
Cordilleran Flycatcher
Cordilleran Flycatcher: Small flycatcher with olive-brown upperparts, yellow throat and belly separated by olive-gray breast, elongated white eye-ring, and pale wing-bars. Black bill is long and wide, and lower mandible is bright yellow. Weak fluttering flight with shallow wing beats.
Carolina Chickadee
Carolina Chickadee: Small chickadee with gray upperparts, distinct black cap and bib, dull white cheeks, and white underparts with rust-brown flanks. Short, black bill. When disturbed in its nest during incubation, it will hiss and strike intruders, similar to how a snake would act.
Chestnut-sided Warbler
Chestnut-sided Warbler: Medium warbler with black-streaked upperparts, white underparts, and chestnut-brown flanks. The cap is bright yellow and moustache stripe is black. Often cocks its tail high above its back as it feeds. The only North American warbler with pure white underparts in all seasons.
Canada Goose
Canada Goose: This long-necked goose has a large gray-brown body, large webbed feet and a wide flat bill. It has dark upperparts, paler underparts, a white vent, cheeks and chinstrap, and a black head and neck. Strong deep wing beats. Strong powerful direct flight. Flies in a in V formation in migration. Feeds on grasses, sedges, berries and seeds. Sexes are similar, but males are larger.
Chihuahuan Raven
Chihuahuan Raven: Small raven, entirely metallic blue-black except for inconspicuous white neck feathers which are infrequently displayed. Eyes are pale brown. Alternates between several deep wing beats and short to long glides. Glides from altitude to perch or ground. Soars on thermals, updrafts.
Common Loon
Common Loon: Large loon, white-spotted, black upperparts and white underparts. Head, neck are green-black with white-streaked neckbands. Bill is black and thick. Eyes are red-brown. Dives for small fish and crustaceans. Direct flight on strong deep wing beats, head, neck and feet extend beyond body.
Common Goldeneye
Common Goldeneye: Medium diving duck, white-striped black upperparts, white underparts. Head is iridescent green-black with white circular patch between yellow eyes and dark gray bill. Wings are dark with large white patches conspicuous in flight. Legs and feet are yellow. Swift, direct flight.
Canvasback
Canvasback: This is a large, flashy diving duck with a pale gray body, black breast and tail and gray legs and feet. The head is red-brown with a long sloping profile, a long dark bill and red eyes. It feeds primarily on aquatic plants. It has a rapid direct flight with strong wing beats and flies high, usually in V- formations.
Common Raven
Common Raven: Large raven with all-black body, large, stout bill, wedge-shaped tail. Eats invertebrates, vertebrates, insects, carrion, refuse, eggs and young of other birds, and rodents. Strong flight, alternates several deep wing beats with long glides on flat wings. Soars on thermals, updrafts.
Cattle Egret
Cattle Egret: Small, stocky egret with a white body and pale orange-brown patches on the head, neck and back. The eyes, bill and legs are orange. This is the only white egret with both a yellow bill and yellow legs. It feeds primarily on insects. It has a direct flight on quick steady wing beats. The sexes are similar.
Cooper's Hawk
Cooper's Hawk: Medium, agile hawk with dark blue-gray back and white underparts with many fine rufous bars. Cap is darker than upperparts. Eyes are red. The tail is long with thick black-and-white bands. Legs and feet are yellow. Alternates rapid wing beats and short glides, often soars on thermals.
Chestnut-collared Longspur
Chestnut-collared Longspur: Small, sparrow-like bird with brown-streaked upperparts, black breast and flanks, some have chestnut on underparts, pale gray belly. Face is buff with black stripe behind eye. Nape is chestnut-brown, crown is black, and throat is white. Tail is black with strongly contrasting white outer tail feathers.
Chipping Sparrow
Chipping Sparrow: Medium, slender sparrow with black-streaked brown back and pale gray underparts. Cap is rufous, nape is gray, throat is white, and face stripes are black-and-white. Black bill. Pink-orange legs and feet. Short flight, alternates several rapid wing beats with wings pulled to sides.
Chimney Swift
Chimney Swift: Medium-sized swift, uniformly dark brown with slightly paler throat and upper breast. Inconspicuous spines extend past web at tips of tail feathers. Bill, legs and feet are black. Flight is rapid and batlike on swept-back wings, alternates with gliding. Soars on thermals and updrafts.
Clark's Grebe
Clark's Grebe: Large grebe, gray-black upperparts, white underparts, and slender neck with white on front and black on back. White face, black cap extends nearly to red eyes. Bill is yellow-orange. Until the 1980's thought to be a pale morph of the Western Grebe. Direct flight on rapid wing beats.
Cassin's Sparrow
Cassin's Sparrow: Medium, skulking grassland sparrow, fine brown streaks on gray-brown head and back, buff underparts. Tail is long, rounded, white-tipped. Legs, feet are pink-orange. Forages by scratching on the ground. Short flight, alternates several rapid wing beats with wings pulled to sides.
Clay-colored Sparrow
Clay-colored Sparrow: Medium sparrow with black-streaked brown upperparts and buff underparts. The face is pale with finely streaked crown, crisp brown cheek patch, white eyestripe, and gray nape. Pink-gray legs and feet. Short flight, alternates several rapid wing beats with wings pulled to sides.
Common Yellowthroat
Common Yellowthroat: Small, skulking warbler with olive-yellow upperparts, bright yellow throat and breast, and pale gray belly. The head has a black mask with a thick white border above, black bill. Legs are pink. Slow weak flight, alternates periods of rapid wing beats with wings pulled to sides.
Cedar Waxwing
Cedar Waxwing: Small waxwing, red-brown upperparts, pale slate-gray rump, buff underparts. Head is crested, has black mask with narrow white band below. Yellow-tipped tail, white undertail coverts. Wings have red wax-like tips on secondaries from which it gets its name. Black bill, legs and feet.
Cliff Swallow
Cliff Swallow: Small, stocky swallow, dark blue-gray upperparts, pale orange-brown rump, buff underparts. Forehead is white or buff while throat, sides of face are orange-brown. Crown is blue-black, bill is short and black. Tail is dark and squared. Legs and feet are gray. Catches insects in flight.