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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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California Gull: This is a medium-sized gull with a white head and underparts, gray wings and black wing tips. The bill and legs are yellow, and it has a red eyering. It has a strong direct flight with deep wing beats. It feeds on worms, mice, other birds and their eggs, and garbage. The sexes are similar, but the males are usually larger than females, with a larger bill, head and tarsi.
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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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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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Connecticut Warbler: Large ground-walking warbler, olive-gray upperparts, dull yellow underparts. Head has a slate-gray hood and bold white eye-ring. 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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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.
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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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Cory's Shearwater: Large gray-brown shearwater, white underparts, pale yellow bill. Feeds at night on crustaceans and large sqiud it takes from the surface. Best identified by its relatively slow, languid flight compared to other shearwaters. Wings held downward. Soars on fixed wings if wind is up.
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Common Eider: Large diving duck (v-nigrum), with distinctive sloping forehead, black body, white breast and back. Crown is black and nape is pale green. Wings are white with black primary and secondary feathers. Tail and rump are black. Bill is dull yellow to gray-green (eastern) or orange-yellow (western).
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Cackling Goose: This small to medium-sized goose has a mottled gray-brown body, black legs, tail, neck, head and face, with a white chin strap stretching from ear to ear and a white rump band. The bill is small and triangular. It eats a variety of plant species and parts, especially grasses, sedges, grain and berries. Strong deep wing beats. Sexes are similar; the male is larger.
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