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Nicobar pigeon : ウィキペディア英語版 | Nicobar pigeon
The Nicobar pigeon (''Caloenas nicobarica'') is a pigeon found on small islands and in coastal regions from the Nicobar Islands, east through the Malay Archipelago, to the Solomons and Palau. It is the only living member of the genus ''Caloenas'' and the closest living relative of the extinct dodo. ==Description==
It is a large pigeon, measuring in length. The head is grey, like the upper neck plumage, which turns into green and copper hackles. 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.〔Grimmett et al. (2009).〕 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. There is hardly any variation across the birds' wide range. Even the Palau subspecies ''C. n. pelewensis'' has merely shorter neck hackles, but is otherwise almost identical.〔 It is a very vocal species, giving a low-pitched repetitive call.〔
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