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Caribbean martin : ウィキペディア英語版 | Caribbean martin
The Caribbean martin or white-bellied martin (''Progne dominicensis'') is a large swallow. It breeds on Caribbean islands from Jamaica east to Tobago. It is closely related to two species to which it formerly was considered conspecific-''P. sinaloae'' (Sinaloa martin) and ''P. cryptoleuca'' (Cuban martin). There are sight records from mainland Central and South America, and most birds appear to migrate to the South American mainland. A single bird was recorded in Key West, Florida, on May 9, 1895 (AOU 2000). It has at various times been considered alternatively as a race of the purple martin, ''Progne subis''. ==Description==
Adult Caribbean martins are 18.5 cm in length, with a forked tail and relatively broad wings, and weigh 40 g. Adult males are a glossy blue-black with contrasting white lower underparts. Females and juveniles are duller than the male, with grey-brown breast and flanks and white lower underparts.
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