アカメカラスバト Columba vitiensis

Dark iridescent pigeon with a triangular throat patch the darkness of which varies geographically; it is white to pale gray across most of the range but dark in the Lesser Sundas. Found over a wide range of altitudes, from lowland into montane forests and edge. Often found in close proximity to human settlements, particularly on small islands. Forages in trees and on the ground. Vocalizations vary slightly; gives both deep booming coos and a higher pitched “COOroo...COOroo...COOroo..”