. The Indian ducks and their allies . es, of ^vhich three are found in Incha. Xjjrocadiffers from Xetta in the formation of the bill and lamollte, the latterhaving them larger, more prominent, and closer together than the former. The genus is a cosmopolitan one, and amongst its ten s{)ecies containswhat is, perhaps, our most common duck, namely, Siiroca ajricana (orferruginea), the White-eye. Kei/ to the Species. a. Back and scapulars distinctly barred or vermiculated . . ferina (S •h. Back and scapulars merely speckled. a. Head and neck dull chestnut or bay afncana cS . b. Head and neck almos
. The Indian ducks and their allies . es, of ^vhich three are found in Incha. Xjjrocadiffers from Xetta in the formation of the bill and lamollte, the latterhaving them larger, more prominent, and closer together than the former. The genus is a cosmopolitan one, and amongst its ten s{)ecies containswhat is, perhaps, our most common duck, namely, Siiroca ajricana (orferruginea), the White-eye. Kei/ to the Species. a. Back and scapulars distinctly barred or vermiculated . . ferina (S •h. Back and scapulars merely speckled. a. Head and neck dull chestnut or bay afncana cS . b. Head and neck almost black haeri d . 0. Upper back and bead rufous-brown, scapulars slightly vermicu-lated ; no white speculum ferina 2 • d. No vermiculations on upper plumage ; a white speculum. a. Head and neck rufous-brown afrkana 2 • h. Head and neck more or less mixed with blackish on the sides haeii $ . In addition, haeri may be discriminated from africana by its larger size-and proportionately larger bill. ^ +-) cd 1—I Ph «A. I • f\. O a: Iz DQ o .1j f^i=C < ^ oo 0. u I NYROCA FERIXA. 217 (36) NYROCA POCHAED or DUN-BIED. Aythya ferina, Jerdon, B. I. iii, p. 812 ; Hume, Sir. FeatJi. i, p. 264; Adams, ibid. p. 409 ; ibid, ii, p. 341 ; Butler, ibid, iv, p. 30 ; v, p. 234 ; Ball, ibid, vii, p. ferina, Davids. 4 ^Vend. Sir. Featli. vii, p. 93; Hume, ibid. p. 496; id. Cat. no. 96S ; Hume c|- Mar. Game-B. iii, p. 247 ; Legge, B. of Cey. p. 1090 ; Butler, Sir. Featli. ix, p. 438 ; Beid, ibid, x, p. 84 ; Davids. ibid. p. 326 ; Taylor, ibid. p. 531 ; Barnes, B. of Bom. p. 412; Hume, Str. Featli. xi, p. ferina, Salvadori, Cat. B. 21. xxvii, p. 335 ; Blanford, Fauna B. I. iv, p. 458; Oates, Game-B. ii, p. 309. Description. Adult male.—Whole head and neck rich deep chestnut, changingrather abruptly into the black of the upper back and breast; rump and uppertail-coverts dull black; remainder of upper plumage extremely pale clear grey,very finely vermicu
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