World Bird List

Species factsheet
Cinnamon-headed Green Pigeon (Treron fulvicollis)

Order: Treron fulvicollis
Family: Pigeons, Doves (Columbidae)

Voices can be found here (external link)
Subspecies and Distribution
Subspecie Distribution
fulvicollis Malay Pen. to Sumatra
melopogenys Nias and Siberut Is. (off w Sumatra)
oberholseri Natuna Is. (off nw Sumatra)
baramensis n Borneo and nearby islands