The olive-backed sunbird (Cinnyris jugularis), also known as the yellow-bellied sunbird, is a species of sunbird found from Southern Asia to Australia.
Common names for this bird include “tamsi” in the Philippines and “kelicap” in Malaysia.
The sunbirds are a group of very small Old World passerine birds which feed largely on nectar, although they will also take insects, especially when feeding young. Their flight is fast and direct on their short wings. Most species can take nectar by hovering, but usually perch to feed most of the time.
The olive-backed sunbird is common across southern China to the Philippines and Malaysia down to northeast Australia. They are small songbirds, at most 12 cm long. In most subspecies, the underparts of both male and female are bright yellow, the backs are a dull brown colour. The forehead, throat and upper breast of the adult male is a dark, metallic blue-black. In the Philippines the males of some subspecies have an orange band on the chest, in Wallacea and northern New Guineasome subspecies have most of the underparts blackish, and in southern China and adjacent parts of Vietnam most of the underparts of the male are greyish-white. source