. A history of North American birds [microform] : land birds. Birds -- North America; Ornithology -- North America; Oiseaux -- Amérique du Nord; Ornithologie -- Amérique du Nord. Tin: VIIiKOS. 37I Vireosylvia gilvus, var swainsoni, IVmud. WESTEBN WABBUNO OREEKLET. Virco swainsoni, I'.inU N. Am. 1>'>H, 33(1 (; toasts. , ;t. IWnls N. A. I, vii. I'innsiilciti sicainsiini. Haiku, h'l-v. Am. I>. 343. I'irvusiflcia yilca, var. HWainmtni, CotU', Oni. Cal. I, ls7l;uk. Sccoml (piill much Kh(»rtL'r than sixth. Total li'iiL'th, ;.'); winj,',
. A history of North American birds [microform] : land birds. Birds -- North America; Ornithology -- North America; Oiseaux -- Amérique du Nord; Ornithologie -- Amérique du Nord. Tin: VIIiKOS. 37I Vireosylvia gilvus, var swainsoni, IVmud. WESTEBN WABBUNO OREEKLET. Virco swainsoni, I'.inU N. Am. 1>'>H, 33(1 (; toasts. , ;t. IWnls N. A. I, vii. I'innsiilciti sicainsiini. Haiku, h'l-v. Am. I>. 343. I'irvusiflcia yilca, var. HWainmtni, CotU', Oni. Cal. I, ls7l;uk. Sccoml (piill much Kh(»rtL'r than sixth. Total li'iiL'th, ;.'); winj,', ; tail, ';): ditU'ri'iict' bt'twct*^ tenth cpiill and loiij.'ost, .oS; exposed portion oi lirst primary, .58, of second, , of lonj^cst (measured from base of •'' * / • -x-wn 1»**91 first primary), ; length of hill from forehead, ..')(>, from nostril, .21), along gape, .0'>; depth of hill, .13; tarsus, .70; middle Virto iuMumom. toe and cluvv, .5(J; hind to'^ and daw, A'.\. Had. United States, from liockv Mountains to I'acilic coast. In the present bird the hill is darker in color, much sniaUer, and more depressed, the depth at the hase heiiio; less than the width, instead of bein*; equal to it as in var. ffUvus. Tlie wing is more rounded, the second quill much shorter than the sixth, generally shorter or but little longer than the seventh. In var. ^//r/^9, the second (piill is about ecpial to the sixth. The second (piill is about .oO of an inch (or more) shorter than the longest in sicainsoni, while in [/ilrus it is only about .20 shorter. The teet of swainsoni are weaker, and the colors generally paler and grayer. The iris, according to Cones, is dark brown. Young birds in autumnal plumage liave the crown decidedly ash, the sides more greenish; the wing-coverts pass terminally into a light brownish tint, producing an inconspicuous band. Habits. This Western representative of the Warbling Vireo is found throughout the western portio
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectbirdsnorthamerica
