This species is classified as Near Threatened in the IUCN Red List as their numbers in the wild are on the decline. These birds are captured for food, pet trade and their gizzard stones which are used to make jewellery. Their distribution is also being affected by habitat loss as the islands which they inhabit are being cleared for plantations, and also being colonized by rats, cats and other alien predators.
It is a large pigeon, measuring 40 cm in length. The head is grey, like the upper neck plumage, which turns into green and copper hackles towards the breast. The breast and remiges are dark grey. The tail is very short and pure white. The rest of its plumage is metallic green. The cere of the dark bill forms a small blackish knob; the strong legs and feet are dull red. The irides are dark .Females are slightly smaller than males; they have a smaller bill knob, shorter hackles and browner underparts. Immature birds have a black tail and lack almost all iridescence.