. A history of North American birds [microform] : land birds. Birds; Ornithology; Oiseaux; Ornithologie. —THE 235 Sp. Chau. Foiiitli (luiU longest; tl.'j-d ami (iftli .aliout uqiial; souoiul In-lwcfn lil'ili mid sixth; lirst neaily fiiual In llic eigliili. Lcii^lli, about or '; extent, to ")l.(tO: wintr, alioul ; tail, Tail nio(l<'nit''iy graduated; the outer t'ealhor aliout to () inches less than the middle. Entirely glos.^y blaek, with liinnished violet rellectious. Entire continent of North America. Rare east of the Mi
. A history of North American birds [microform] : land birds. Birds; Ornithology; Oiseaux; Ornithologie. —THE 235 Sp. Chau. Foiiitli (luiU longest; tl.'j-d ami (iftli .aliout uqiial; souoiul In-lwcfn lil'ili mid sixth; lirst neaily fiiual In llic eigliili. Lcii^lli, about or '; extent, to ")l.(tO: wintr, alioul ; tail, Tail nio(l<'nit''iy graduated; the outer t'ealhor aliout to () inches less than the middle. Entirely glos.^y blaek, with liinnished violet rellectious. Entire continent of North America. Rare east of the Mississippi. South to Guatemala. Tlioiioli easily (listinguishable from the European Lird, tlie American Raven is so nearly related to it tu be beyond doubt rel'erriUe to it as a variety. The dill' presentetl in a very large scries of buth forms are, however. very eonstiint and tangible. In the American liird the l)ill is always longer and less deep, and the plumage is more highly burnished, while the wings, especially the secondaries, are perceptibly uf ii more reddish violet than the other jiortions. Tliough in an immense series of American specimens many differences of form and size are noted,yet there is nothing stilliciently charat;!eristic of any jjartindar region to indicate nujre than one variet}'. As a rule, however, spe- cimens from the high north e.\ceed in size those from elsewhere, and have the bill more robust, though not so short as in the Eiu'opeau bird ; while those from the Middle Province and Mexico (o (luatemala (= "cuca/of/," Baird et Auct.) have the jilumage more brilliant than otli- ers, and IVetjuently the bill very narrow. Assuming thtit we must consider its but one species the two dilVering forms of Haven f(aind in \orth America, we find this bird more or less common througl 't nearly the whole continent. Tt is muidi more aluiiulant in some regions than in others, and, as a general rule, is much more common and also more
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbirds, booksubjectorn
