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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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 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.
Cinnamon Teal
Cinnamon Teal: Small dabbling duck, scaled, dark brown upperparts, cinnaon-brown underparts, head, neck. Eyes are red and bill is relatively long and dark. Green speculum, pale blue shoulder patch on wing are separated by white line. Yellow-gray legs. Swift direct flight with rapid wing beats.
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.
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.
Cassin's Finch
Cassin's Finch: Medium-sized, cheery finch with bright red crown, brown-streaked back. White belly, buff neck,upper breast and rump. Bill tapers evenly to a sharp point. Forages on ground and high in trees, eats mostly conifer seeds and buds, some insects. Swift bounding flight on rapid wing beats.
Cassin's Kingbird
Cassin's Kingbird: Large flycatcher, dark olive-gray upperparts, dull yellow underparts. Mask is dark gray, throat is white and breast is gray. Tail is black with gray or white tip. Black bill, legs and feet. Bouyant fluttering flight with shallow wing beats. Hovers to take insects, berries, fruit.
Caspian Tern
Caspian Tern: Large, stocky tern with pale gray upperparts, white underparts. Cap is black and may appear weakly crested; large bill is coral-red. Undersides of primaries are gray. Tail is white, relatively short, and slightly forked; legs are black. Hovers above water before diving.
Crissal Thrasher
Crissal Thrasher: Large thrasher with gray-brown upperparts and unstreaked, gray underparts. The throat is white with dark moustache stripe, eyes are yellow, and black bill is long and strongly decurved. Tail is very long with chestnut-brown undertail coverts. Legs and feet are black.
Chukar
Chukar: Large, quail-like bird with orange-brown and slate-blue upperparts and breast, and black and rufous barred white flanks. White face has sharp black line extending to neck. Bill and legs are bright pink-red. Escapes danger by running. Direct flight with rapid deep wing beats.
Canyon Wren
Canyon Wren: Medium wren with rust-brown upperparts, fine white spots on gray-brown back, nape, and crown, white throat and breast, and white-spotted brown belly. Tail is long and brown with thin black bars. Head has a flattened appearance; bill is long, slender, and slightly decurved.
Cassin's Vireo
Cassin's Vireo: Small vireo, olive-gray upperparts, white underparts, pale yellow flanks. Head is gray with white eye-ring that extends to brow. Wings are dark with two white bars. Until the 1990s was classified as the Solitary Vireo, along with the Blue-headed and Plumbeous Vireos.
Cactus Wren
Cactus Wren: Large wren with black-and-white streaked reddish-brown back, dark crown with distinctive white stripe over eyes, white chin, and heavily spotted white underparts with buff wash on sides and belly. Wings and tail are dark with white bars. Bill is long and slightly decurved.
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.
Common Moorhen
Common Moorhen: 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: Medium tern, medium gray upperparts, pale gray underparts, glossy black cap and nape. Wings are dark-tipped and have dark leading edge on forewing. Red bill is black-tipped. Legs are red and tail is deeply forked and elongated. Direct flight, hovers above water before diving for prey.
Clark's Nutcracker
Clark's Nutcracker: Medium, noisy and inquisitive jay with pale gray head and body. Black bill is long and stout. Wings are black with white patches and tail is black with white edges. Feeds on nuts, insects, eggs and young of other birds, lizards, carrion and small mammals. Steady deep wing beats.
Canada Goose
Canada Goose: Large, long-necked goose with dark upperparts and paler underparts grading to white on vent. The head and neck are black with white chin bar. Body is usually gray-brown, although varies from dark brown to gray in different races. White semi-circle above black tail is visible in flight.
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.
California Quail
California Quail: Medium quail with distinctive, curled black head plume and white-bordered black throat. Breast is gray and belly is sharply scaled. The flanks are brown with white streaks and back is olive-brown. Legs and feet are gray. Alternates several stiff, rapid wing beats with short glides.
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.
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: Large, flashy diving duck with pale gray body and black breast, tail. Head is red-brown with long, sloping profile and long, dark bill. Eye is red. Legs and feet are gray. Feeds primarily on aquatic plants. Rapid direct flight with strong wing beats. Flies high, usually in V formations.
Cattle Egret
Cattle Egret: Medium, stocky egret with white body and pale orange-brown patches on head, neck and back. Eyes, bill and legs are orange. This is the only white egret with both a yellow bill and yellow legs. Feeds primarily on insects disturbed by livestock. Direct flight on quick steady wing beats.
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.
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.
Calliope Hummingbird
Calliope Hummingbird: Very small hummingbird, metallic green upperparts and flanks, white underparts. Throat feathers are long, purple-red, appearing as streaks on a white background, whiskers when fluffed out, or dark, inverted V when folded. Direct and hovering flight with very rapid wing beats.
Costa's Hummingbird
Costa's Hummingbird: Medium hummingbird with green back, pale gray underparts and dull green flanks. Crown and throat patch are brilliant metallic purple. Straight black bill. Tail is green with black outer tail feathers. Legs and feet are black. Feeds on nectar, spiders, sap and insects. Direct and hovering flight with very rapid wing beats.
California Gull
California Gull: Moderately large gull, white body, gray wings, black wing tips. Bill is yellow with red and black spot near tip of bill on lower mandible. Legs are yellow; eye is dark with red orbital ring. Strong direct flight with deep wing beats. Soars on thermals and updrafts.
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.
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.