. Handbook of birds of eastern North America : with keys to the species, and descriptions of their plumages, nests and eggs, their distribution and migrations ... . Hind toe normal, with a nail. b^. Tarsus 1-50 or over 58. Laughing Gull (Im.). c^. Tarsus under Secondaries pearl color, tail square. 60. Bonapartes Gull (Im.).c3. Secondaries mostly white, tail rounded. 61. Rosss Gull (Im.). 39. Gavia alba (Gunn.). Ivory Gull. Ad.—Entire plumage purewhite; bill yellow, feet black. Im.—Similar to ad., but the wing and tail GULLS. 69 feathers, and sometimes the wing-coverts, with a black s
. Handbook of birds of eastern North America : with keys to the species, and descriptions of their plumages, nests and eggs, their distribution and migrations ... . Hind toe normal, with a nail. b^. Tarsus 1-50 or over 58. Laughing Gull (Im.). c^. Tarsus under Secondaries pearl color, tail square. 60. Bonapartes Gull (Im.).c3. Secondaries mostly white, tail rounded. 61. Rosss Gull (Im.). 39. Gavia alba (Gunn.). Ivory Gull. Ad.—Entire plumage purewhite; bill yellow, feet black. Im.—Similar to ad., but the wing and tail GULLS. 69 feathers, and sometimes the wing-coverts, with a black spot at their tips. L.,17-00; W., 13-25; T., 5-50; B., 1-35. Range.—Arctic seas, south in winter on the Atlantic coast of NorthAmerica to Labrador and Newfoundland, casually to New Brunswick, and onthe Pacific side to Bering Sea (A. O. U.). Long Island, A. V., one record. Nest^ of grass, moss, and featheis on rocky cliffs. Egcjs^ light yellowisholive, marked with small blotches of brown and larger cloudings of lilac,2-45 X 1-70 (Brewer). The Ivory Gulls appear to spend most of the time amid the pack-ice, often at a long distance from land (Chamberlain).. Fig. 60—First primaries of adult Gulls, seen from below: (a\ Am. HerringGull : {h^ Ring-billed Gull ; (c) Laughing Gull ; (d) Franklins Gull; (e) Bona-partes Gull. 40. Rissa tridactyla (Z?7i«.). Ktttiwake. Ad. in swnmer.—Head,neck, tail, and under parts pure Avhite; back and wings pearl-gray; outerweb of first primary and 3-00 of the ends of first and second primaries black; YO GULLS. third to fifth primaries black at the ends and with white tips; hind toe verysmall, a mere knob without a nail / bill yellowish, feet black. Ad. in winter.—Similar to above, but the top of the head and back of the neck washed withpearl-gray, and a dark spot about the eye. Im.—Similar to winter adults,but with the back of the neck, lesser wing-coverts, and part of the tertialsblack; tail, except outer pair of feathers, with a black ba
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1898
