. The birds of Illinois and Wisconsin. Birds; Birds. Jan., 1909. Birds of Illinois and Wisconsin — Cory. 73 General plumage, grayish; rump, white; larger than C. hyper- borea (immature). Eastern North America, south in winter to Florida and Cuba. Chen hyperborea nivalis. Greater Snow Goose. See No. 68a. Head, brownish gray; chin, white; rump, gray; unguis (nail of bill), yellow; wing coverts, grayish, showing very little white on the edge of the feathers (immature). Chen ccerulescens. Blue Goose. See No. 69. Subfamily CYGNINtE. Swans. Size, very large; bare skin, between the bill and eye; tars
. The birds of Illinois and Wisconsin. Birds; Birds. Jan., 1909. Birds of Illinois and Wisconsin — Cory. 73 General plumage, grayish; rump, white; larger than C. hyper- borea (immature). Eastern North America, south in winter to Florida and Cuba. Chen hyperborea nivalis. Greater Snow Goose. See No. 68a. Head, brownish gray; chin, white; rump, gray; unguis (nail of bill), yellow; wing coverts, grayish, showing very little white on the edge of the feathers (immature). Chen ccerulescens. Blue Goose. See No. 69. Subfamily CYGNINtE. Swans. Size, very large; bare skin, between the bill and eye; tarsus, reticu- late (scales rounded); neck, very long; wing, over 19 inches long; hind toe, without flap. General plumage, white; bill, black, with yellow spot (adult); distance from tip of bill to nostril, less than distance from nostril to eye (immature birds are gray or brownish gray). Olor columbianus. Whistling Swan. See No. whistling Swan. General plumage, white; bill, black, showing no yellow; distance from tip of bill to nostril, more than distance from nostril to eye. Chiefly found in the interior of North America; (immature birds are gray or brownish gray). Olor buccinator. Trumpeter Swan. See No. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Cory, Charles B. (Charles Barney), 1857-1921. Chicago
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Keywords: ., bookauthorcory, bookcentury1900, bookdecade1900, booksubjectbirds
