. The birds of Illinois and Wisconsin . ed from the LakeMichigan region. Som-ateria mollissima borealis. Northern Eider Duck. Jan., 1909. Birds of Illinois and Wisconsin — Cory. 71 Head, tawny, streaked with brown; axillars, white, or grayishwhite; throat, not streaked; feathers on bill, more than one-fourthinch from nostril (female). Somateria spcctabilis. King Eider Duck. See No. 62. Subfamily ANSERINE. Geese. Special Characters;late (scales rounded) Size, large; lores, feathered; tarsus, reticu- hind toe, without flap. * GROUP 1. Wing, 12 to 14 inches long. Bill and feet black; head and nec
. The birds of Illinois and Wisconsin . ed from the LakeMichigan region. Som-ateria mollissima borealis. Northern Eider Duck. Jan., 1909. Birds of Illinois and Wisconsin — Cory. 71 Head, tawny, streaked with brown; axillars, white, or grayishwhite; throat, not streaked; feathers on bill, more than one-fourthinch from nostril (female). Somateria spcctabilis. King Eider Duck. See No. 62. Subfamily ANSERINE. Geese. Special Characters;late (scales rounded) Size, large; lores, feathered; tarsus, reticu- hind toe, without flap. * GROUP 1. Wing, 12 to 14 inches long. Bill and feet black; head and neck, black; sides of neck (notfront, mottled with white; no speculum; lower breast, grayish; no white on head. Branta bernicla glaucogastra. No. 72. A patch of white on side of head, extending to throat; rest of headand neck, black. Branta canadensis minima. Cackling Goose. See No. 71b. * GROUP 2. Wing, from 14 to 22 inches long. SECTION I. Head and neck, black or blackish, marked with moreor less white; bill and feet, Head and neck, black; a patch of white on each cheek, extending to upper throat; no white on neck. Branta canadensis, and races. Canada Goose. See Nos. 71, 71a, 71b. Head and neck, black; side (not front) of neck, speckled withwhite; upper belly, whitish. Common on Atlantic coast. Branta bernicla See No. 72. * For directions for measurement, see page 21. 72 Field Museum of Natural History—^Zoology, Vol. IX. SECTION 2. Bill and feet, pink or flesh color in life; head, white,sometimes tinged with brownish orange. Entire plumage, white; primaries, black; smaller than C. ; bill, over ; tarsus, over ; middle toe, over (adult). Chiefly Pacific coast to Mississippi Valley, rare on Atlanticcoast. Chen hyperborea. Lesser Snow No. 68. Entire plumage, white; primaries, black; resembles precedingspecies but is larger (adult). Eastern North America, south inwinter on Atlantic coast to Florida and Cuba. Che
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