. The water birds of North America [microform]. Birds; Water-birds; Oiseaux; Oiseaux aquatiques. :-r^p_- l>«pileum. including' lores, covered with a bare, granulated skin (red- dish in life), interspei'sed with scattered fine blackish hairs ; the posterior margin of this bare skin. divided medially, on the occi])Ut, by an angular projection of the feathers on the upper luirt of tlji- nai)e. General color of the plumage continuous and nearly uniform plumbeous-gray, this fit- quently stained or overLiin in places by a rusty wash, the primaries slate-colored, with wliitisli shafts. Cheeks and
. The water birds of North America [microform]. Birds; Water-birds; Oiseaux; Oiseaux aquatiques. :-r^p_- l>«pileum. including' lores, covered with a bare, granulated skin (red- dish in life), interspei'sed with scattered fine blackish hairs ; the posterior margin of this bare skin. divided medially, on the occi])Ut, by an angular projection of the feathers on the upper luirt of tlji- nai)e. General color of the plumage continuous and nearly uniform plumbeous-gray, this fit- quently stained or overLiin in places by a rusty wash, the primaries slate-colored, with wliitisli shafts. Cheeks and throat sometimes distinctly whitish. Legs and feet blackish ; bill blackish, paler at tip ; iris crimson ( YmuKj: Head entii'ely feathered. Plumage much as in the adult, but of a lighter and more brownish gray, and always conspicuously stained, especially on upper parts, with tawny cinnamon or ferruginous. II canadensis. Wing, )(» inches ; culmen, ; tarsus, «.7(> : middle toe, /3. mexicana. Wing, 2().tK)-22.()0 inches ; culmen, ()-6.(K); tarsus, 1().0(); middle toe. In this species there is a vast amount of individ\ud variation in both proportions and colors. especially the former, scarcely two specimens being apiu'oxiniately alike in all their measurements. As to cold's, the cheeks and throat are usually grayish or light ash-gray ; but sometimes they are distinctly white, in very marked contrast to the jjlunibeous-gray of the nape —a ])eculiarity we are inclined to ascribe to probable greater maturity of the individual. Besides this variation, the plumage is freciuently entirely devoid of any stain, while again it is very highly tinged with that color. The shape of the hill also varies greatly, as does also the appearance of the naked part of the head ; the latter is sometimes roughly granulated or almost papillose, with few hairs (as in N". 8914, Nebraska, in which it is also scarcely divided by the o
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbirds, bookyear1884
