AMERICAN RAVEN.
486. Corvus corax sinuatus. 24 inches.
This is a large edition of the Crow, and is found west of the Rockies from British Columbia southward. Their plumage is a bluish black, with lengthened and stiffened feathers on the neck. Their general habits are much the same as the Crow. Their food consists principally of carrion, fish, and eggs and young of smaller birds. They nest on the high cliffs in almost inaccessible places, building large nests of sticks, in which they deposit four eggs of a pale greenish white, spotted and blotched with shades of brown and drab (1.95 × 1.25).
WHITE-NECKED RAVEN.
487. Corvus cryptoleucus. 21 inches.
A smaller bird than the above, and has the base of the neck feathers white. It is a more southern variety, and is found in Arizona and on the Mexican borders. They build at low elevations, making their nests of sticks and twigs. Four pale blue eggs, spotted with dark brown (1.75 × 1.20).
NORTHWESTERN CROW.
489. Corvus caurinus. 17 inches.
This is one of the smaller Crows, found only on the coasts of Oregon to Alaska, where it feeds almost wholly upon fish.