(1273) Aethopyga sanguinipecta sanguinipecta.
Waldenis Yellow-backed Sunbird.
Aethopyga sanguinipecta Walden, A. M. N, H., (4) xv, p. 400 (1875). (Tounghoo, Karenni) ; Blanf. & Oates, ii, p. 354.
Vernacular names. None recorded.
Description. - Male. Very similar to the Black-breasted Sunbird but has the yellow rump-band broad and conspicuous; the black of 'the throat only extends to the extreme upper breast and is then sharply defined from the olive-yellow of the lower breast which is streaked with blood-red; remainder of lower parts olive-green, paler than in AE. s. saturata.
Colours of soft parts. Iris brown; bill and legs black. The bill in the female is more a dark horny-brown than black.
Measurements. Wing 52 to 56 mm.; tail 64 to 72 mm.; tarsus 14 to 17 mm.; culmen 17 to 19 mm.
Female. Distinguishable from the Black-breasted Sunbird by having a broad lemon-yellow band across the rump.
Distribution. South Shan States, Karen Hills, South to Muleyit in Tenasserim ; Yunnan.
Nidification. Nothing recorded.
Habits. Very little known. It seems to be a bird of forests and bamboo-jungle and occurs from the level of the plains up to some 6,000 feet.