. The birds of Illinois and Wisconsin. Birds; Birds. ORDER LONGIPENNES. LONG-WINGED SWIMMERS. Family STERCORARIID^. Skuas and jEcger (adult). (Immature birds lack the long middle tail feathers.) The Jaegers are pelagic species, although they occasionally occur on the Great Inland Lakes. They feed principally upon fish, much of which they obtain by chasing and robbing the gulls and terns of their prey. Six species are recognized, four of which occur in the northern hemisphere and two in the southern. Genus STERCORARIUS Brisson. 10. Stercorarius pomarinus (Temm.). POMARINE J^GER. Distr
. The birds of Illinois and Wisconsin. Birds; Birds. ORDER LONGIPENNES. LONG-WINGED SWIMMERS. Family STERCORARIID^. Skuas and jEcger (adult). (Immature birds lack the long middle tail feathers.) The Jaegers are pelagic species, although they occasionally occur on the Great Inland Lakes. They feed principally upon fish, much of which they obtain by chasing and robbing the gulls and terns of their prey. Six species are recognized, four of which occur in the northern hemisphere and two in the southern. Genus STERCORARIUS Brisson. 10. Stercorarius pomarinus (Temm.). POMARINE J^GER. Distr.: Seas and inland waters of northern part of northern hemi- sphere; south in winter to Africa and Australia. Its winter range in America is uncertain. Adult (light phase of plumage): Bill, over , tarsus, over , upper parts, slaty gray, a tinge of pale yellow on the sides of the head and neck; crown of the head and lores, sooty black; under parts, white, shading into slaty gray on sides and lower belly; ends of two middle tail feathers, rounded. Adult {dark phase) .â General plumage, sooty brown, slightly paler below; crown, dark brown. Immature (light phase). Head and neck streaked with buff or gray; under parts mottled and barred with slaty gray; upper parts, dark gray; some of the feathers edged with buff. 286. 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
