. 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, inclusive of Greenland and lower California, with which are incorporated General ornithology, an outline of the structure and classification of birds, and Field ornithology, a manual of collecting, preparing, and preserving birds . ribed from Vera Cruz and Mazatlau; Elliot, B. N. A. 1866,pi. 26, type figured. Not taken up in former editions of the Key. A. 0. U. HypotheticalList, No. 13. CATHARISTA. (Gr. Ka6ap
. 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, inclusive of Greenland and lower California, with which are incorporated General ornithology, an outline of the structure and classification of birds, and Field ornithology, a manual of collecting, preparing, and preserving birds . ribed from Vera Cruz and Mazatlau; Elliot, B. N. A. 1866,pi. 26, type figured. Not taken up in former editions of the Key. A. 0. U. HypotheticalList, No. 13. CATHARISTA. (Gr. Ka6api(oi, hifharizo, I purify.) Carrion-crows. Of medium size;body stout. Head naked, and generally as in Cathartes, but feathers of neck running up be-hind to a point on oc- ciput; outline of plu-mage thus very differ-ent from that of Cere contracted;nostrils narrow, lessopenly pervious thanin Cathartes. Wingsshorter and relativelybroader than in Ca-thartes, not folding toend of tail, which isshort, only about ^ thewing, even or emar-giuate; 4th and 5thquills longest- Thedifference in size andshape between Ca-thartes and Catharista ^«- l^^O. -Black Vulture, I nat. size. (From Brehm.) is strikingly displayed when the birds are seen flying together; there is also a decided difier-ence in mode of flight, as Catharista never sails for any distance without interrupting thateasy motion by flapping the : COLUMBINE BIRDS. 705 C. urubu. (South American name of some bird of this family. Figs. 480, 481.) Carriox-CROW. Black Vulture. Adult $ 9: Entire plumage, including skin of head, and bill,blackish; shafts of primaries white, theirbases paling to gray or whitish. Tip of billand feet grayish-yellow; iris brown; clawsblack. Smaller than C. aura, in linear di-mensions, but a heavier bird; length about2 feet; only about 4^ feet ; wing ; tail ; tarsus ,; middle toerather less; chord of culmen without or less. Nesting like that of C. a
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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectbirdsnorthamerica
