Bonaparte, Charles Lucian, 1803-1857 / American ornithology, or, The natural history of birds inhabiting the United States, not given by Wilson : with figures drawn, engraved, and coloured, from nature
Dusky grous. Tetrao obscurus. Plate XVIII. Female, pp. 27-36 ff.
~27 DUSKY GROUS. TET:AO OBSCURUS. Plate XVIII. Female. TdtaM euriw, SAY, in Logs Exped. to Roky Mount. II, p. 14. NOB. Cat. Birds U 5. Sp 209, in Conr MaCI. Lye. Phila. I, P. 3. ID. Syn. Bi. S. Sp. 207, in .nn. ye. Nat. Hist. N. 1 pp. 127, 442. Philacdephia Muweum, Female. Colection of Mr. Sabine, in London, Male and Female. X LINN*, in his genus Tetrao, brought together so great a number of species bearing no more than a distant resemblance to each bther. and differinff not only in their external characters. but even in their peculiar habits, that he might with almost the samb propriety have included in it all typical gallinaceous birds. Latham very judiciously separated the genus Tinamus, as well as that of Perdix, which latter he restored from Brisson. Illiger likewise contributed to our better knowledge of these birds by harieterizing two more natural genera, Syrrhaptes and Ortygis. Temniinck, in his listoire des Galns, carried the number to seven, but has sinmce reduced it by reuniting Coturnix to Perdix. The truie T ns are divided bby Vieillot into two genera, the Ct one by themselves 'These however n a subgenus, of which we distinguish I. Lagopus, which represents it in for whose climate they are admirably to the very nails: in plumage suited to I abundantly with thick dowvn, upon losely applied. The colour of their
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