World Bird List

Species factsheet
Micronesian Imperial Pigeon (Ducula oceanica)

Order: Ducula oceanica
Family: Pigeons, Doves (Columbidae)

Voices can be found here (external link)
Subspecies and Distribution
Subspecie Distribution
monacha Palau and Yap Is. (w Caroline Is.)
teraokai Chuuk I. (c Caroline Is.)
townsendi Pohnpei I. (e Caroline Is.)
oceanica Kosrae I. (e Caroline Is.)
ratakensis Marshall Is.