World Bird List

Species factsheet
Northern Golden Bulbul (Thapsinillas longirostris)

Order: Thapsinillas longirostris
Family: Bulbuls (Pycnonotidae)

Voices can be found here (external link)
Subspecies and Distribution
Subspecie Distribution
platenae Sangihe Is. (ne of Sulawesi)
aurea Togian Is. (e of Sulawesi)
harterti Banggai Is. (e of Sulawesi)
longirostris Sula Is. (n Moluccas)
chloris Morotai, Halmahera and Bacan Is. (n Moluccas)
lucasi Obi I. (n Moluccas)