World Bird List

Species factsheet
Olive-backed Sunbird (Cinnyris jugularis)

Order: Cinnyris jugularis
Family: Sunbirds (Nectariniidae)

Voices can be found here (external link)
Subspecies and Distribution
Subspecie Distribution
andamanicus Andaman Is.
proselius n Nicobar Is.
klossi c and s Nicobar Is.
rhizophorae s and se China, Hainan I. and n Vietnam
flammaxillaris Myanmar, Thailand, c and s Indochina and n Malay Pen.
ornatus c and s Malay Pen., Sumatra, Borneo, Java, Bali and most Lesser Sundas
polyclystus Enggano I. (off w Sumatra)
aurora w Philippines
obscurior n Luzon (n Philippines)
jugularis Philippines (except n Luzon and w and sw islands)
woodi Sulu Arch. (sw Philippines)
plateni Sulawesi and many nearby islands
infrenatus Tukangbesi and other islands off se Sulawesi
robustirostris Banggai and Sula Is. (off e Sulawesi)
teysmanni islands in the Flores Sea
frenatus n Moluccas, New Guinea (except n), Aru Is. (sw of New Guinea, islands se of New Guinea and ne Australia
buruensis Buru I. (s Moluccas)
clementiae s Moluccas (except Buru)
keiensis Kai Is. (sw of New Guinea)
idenburgi n New Guinea
flavigastra Bismarck Arch. and Solomon Is.