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Canyon Towhee: Large sparrow, gray upperparts, pale gray underparts, large central breast spot, and white belly patch. Crown is rust-brown. Tail is long with brown undertail coverts. Legs are pink-brown. Short flights with rapidly beating wing strokes alternating with wings pulled briefly to sides.
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Crimson-collared Grosbeak: Large finch with blood-red body, brown-red back, black hood, bib, huge conical bill, and dark wings. Forages in brushy woodland. Feeds on insects, larvae, seeds, fruits, berries. Short flights, alternates rapid wing beats with wings pulled briefly to sides.
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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.
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Common Peafowl: Peacock. Large pheasant with shimmering blue neck and breast. Face is white and head sports a fan-shaped blue crest. During courtship, long ornate tail is fanned out and held erect. Each tail feather has an eye. It forages and nests on the ground but roosts in the top of trees.
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California Condor: Very large raptor with black body, bare-skinned red-orange head, and white wing patches. They can soar for longs periods with minimal wing movement. Locates carrion with its keen eyesight, can survive several days without food. Has the largest wingspan of any North American bird.
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Common Black-Hawk: Large hawk, nearly all black with white patch just behind bill. Bill, legs and feet are bright orange-yellow. The tail is black with single, thick white band across the middle and a thin, white tip. Alternates deep steady wing beats with short to long glides. Soars on thermals.
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California Gnatcatcher: Medium-sized gnatcatcher with a black cap, dark blue-gray upperparts, black tail, and paler gray, buff-washed underparts. Bill is short, slender, and black. Tail is black with white edges, with undertail appearing all-black when closed. Legs and feet are black.
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Common Crane: Large wading bird, gray overall with a black face, chin, throat and neck; shows a patch of bare red skin on crown. Broad white stripe extends from behind eye down back of neck. Black flight feathers and short tail are visible in flight. Bill is dull yellow and legs and feet are black.
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Common Sandpiper: Eurasian counterpart to the Spotted Sandpiper; has dusky gray upperparts, heavily streaked breast, and sparkling white underparts. Best distinguished by its habit of standing in a semi-crouch and bobbing back and forth. Flies low over water with stiff shallow wing beats and glides.
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Clay-colored Robin: Large thrush with olive-brown upperparts, buff throat has faint brown streaks, and pale brown underparts. Bill is yellow-green and black-tipped. The legs and feet are gray-black. Direct, swift flight on rapidly beating wings. It is the national bird of Costa Rica.
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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.
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Common Chaffinch: Medium finch. Buff body. Crown and nape are blue-gray; belly and vent are white. Dark wings with white shoulder patches and single white bars. Forages in trees, bushes. Eats seeds and insects. Bounding flight, alternates rapid wing beats with wings pulled to sides.
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Cave Swallow: Small swallow (Southwest pelodoma), with steel-blue upperparts, white underparts, rufous wash on breast and sides. Forehead is chestnut-brown and throat and rump are buff. Tail is square. Swift, graceful flight, alternates several rapid, deep wing beats with long curving glides.
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Common Pauraque: Medium nightjar with dark-streaked, mottled gray upperparts, white throat, black chin, rufous face, pale gray-brown underparts. Wings have brown and black bars, white band at base of primaries visible in flight. The gray tail is long, with dark edges and white patches.
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California Thrasher: Large, slender thrasher with dark brown upperparts and paler gray-brown underparts. Face is finely streaked, eyes are dark, and black bill is very long and down curved. Throat has small buff patch. Tail is long with reddish-brown undertail coverts. Legs and feet are gray-brown.
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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.
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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.
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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.
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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.
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Chestnut-backed Chickadee: Small, energetic chickadee with chestnut-brown back, rump and flanks, and white breast and belly. Cap and throat are black; cheek patch is white. Wings and tail are dark. Legs and feet are gray-black. Song not whistled like other chickadees, more like a sparrow chipping.
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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.
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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.
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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.
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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.
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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.
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Connecticut Warbler: Large ground-walking warbler, olive-gray upperparts, dull yellow underparts. Head has a slate-gray hood and bold white eye-ring. Legs are bright pink-red. It was named for the state where it was first discovered, where it is an uncommon migrant. Sometimes called Swamp Warbler.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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Cape May Warbler: Small warbler, olive-yellow upperparts, thick, black streaks on yellow underparts. Bright yellow face, chestnut-brown ear patch, black crown. Wings are dark with large white patches. First collected in Cape May, New Jersey in 1811 and not seen again in that area for over 100 years.
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