(1261) Aethopyga siparaja nicobarica.
The Nicobar Yellow-backed Sunbird.
Aethopyga nicobarica Hume, Str. Feath., i, p. 412 (1873) (Nicobars); Blanf. & Oatos, ii, p. 350.
Vernacular names. None recorded.
Description. - Male. Differs from AS. s. cara in having the tail more violet-purple with no green tinge and the upper tail-coverts the same; the metallic colour of the head violet-purple and restricted to the forehead and anterior crown.
Colours of soft parts as in the preceding bird.
Measurements. Wing 50 to 52 ram.; tail 40 to 45 mm.; culmen 17 to 18 mm.
Females. Not distinguishable from the Tenasserim Yellow-hacked Sunbird, but often have the throat marked with a certain amount of red.
Distribution. Nicobar Islands.
Nidification. Davison was shown a nest of this Sunbird taken by Stoliczka which had been fastened "to the very end of a long, narrow pandanus leaf, about 30 feet from the ground." I can trace nothing further than this about its nesting Habits.
Habits. Very similar to those of the preceding bird and it is said, like that bird, to be very partial to the coconut-palms as hunting-ground for food though otherwise it frequents low flowering shrubs in preference to trees. It has no song but makes the usual twittering notes of the genus when feeding and flying. It appears to keep to the open country and the outskirts of forest and does not enter the latter to any distance.