. Key to North American birds; containing a concise account of every species of living and fossil bird at present known from the continent north of the Mexican and United States boundary. Illustrated by 6 steel plates and upwards of 250 woodcuts. Birds. STlilGIU^E, OWLS. GEN. 145, 14G, 147. 205 A )luekisli nuiildugs. Ilc'iul smoolii: fhcinl disks 145. Genus 3NYCTEA Stephens. Snowy Old. Pure Avhite, with more (ir fewer Nearly 2 feet long; wing 17 iuelies ; tail 10 incomplete ; eyes and ear parts moder- ate ; feet densely clothed. This reiuark- al)lo owl, conspicuous both in size and color, inha


. Key to North American birds; containing a concise account of every species of living and fossil bird at present known from the continent north of the Mexican and United States boundary. Illustrated by 6 steel plates and upwards of 250 woodcuts. Birds. STlilGIU^E, OWLS. GEN. 145, 14G, 147. 205 A )luekisli nuiildugs. Ilc'iul smoolii: fhcinl disks 145. Genus 3NYCTEA Stephens. Snowy Old. Pure Avhite, with more (ir fewer Nearly 2 feet long; wing 17 iuelies ; tail 10 incomplete ; eyes and ear parts moder- ate ; feet densely clothed. This reiuark- al)lo owl, conspicuous both in size and color, inhabits the boreal regions of both continents, coming southward in winter ; it ordinarily enters the United States, and in extreme cases ranges irregularly through most of the States. It is not by any means exclusively nocturnal. WiLS., iv, 53, pi. 32, f. 1; Nutt., i, 116; AuD., i, 113, pi. 28; Cass, in Bd., 63; Coop., 447 kivea. 146. Genus SURTiTIA Dumeril. Hawh Old. Day Oid. Dark brown aljove, more or less thickly speckled with white ; below, closely barred with brown and whitish, the throat alone streaked; quills and tail with numerou with black. Length about 16 inches ; wing 9 ; tail 7, graduated, the lateral feathers 2 inches shorter than the central. Except in the Icngtli of its tail, which produces linear measurements unusual for a liird of its bulk in this family, its general form is that of the snowj' owl. Like that species, it is a ))ird of Arctic regions, coming southward in winter, but its range is more restricted, rarely extending to the Middle States. It is the most diurnal l>ird of the famil}', ranging abroad at all times, and approaches a hawk more nearly than any other. \Yils., vi, 64, pi. 50, f. 6; Nutt., i, 115; AuD., i, 112, pi. 27 ; Cass, in Bd., 64 ; Coop., 448. uliila var. ^ Fro. r:s. S)io\vy white bars; face ash\-, niara'ined 3 147. Genus NYCTALE Erehm. *.j.* Small owls with the head nntufted, the facial disks complete, the ears opercn-


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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbirds, bookyear1872