861. Aethyia bAeri

861. BAER’S DUCK.
AETHYIA BAERI.
AEthyia boeri (Radde), Reis. S. O. Sib. ii. p. 376, pl. 15 (1863) ; (David and Oust.), Ois. Chine, p. 509. pl. 124 ; (Seebohm), B. Jap, Emp. p. 254 ; (Salvadori), Cat. B. Br. Mus. xxvii. p. 344 ; (Tacz.), F. O Sib. O. p. 1169 ; (Blanf.) F. Brit. Ind. Birds, iv. p. 461.
Akahajiro, Jap.
Male ad. Differs from N. ferruginea in having the head and neck black, glossed with bottle-green ; bill bluish plumbeous, the base and nail black ; feet lead-grey ; iris white or pale yellow. Culmen 2.0, wing 8.0, tail 2.8, taraus 1.25 inch. The female differs from that of N. ferruginea in having the head and neck brownish black, with a very faint gloss ; lores rufous brown.
Hab. Kamchatka ; Eastern Siberia ; in winter migrating to Japan, China, and India ; has once occurred in England (cf. Bull. B. O. Club xii p. 25). In its general habits and nidification it resembles AE. nyroca ; its eggs also resemble those of that species, being yellowish buff, and measure about 2.1 by 1.54. CLANGULA. Leach, 1819.