Assertion: rumped petrel | /r/CapableOf | call black-capped petrel
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text: Some of the better known gadfly petrels are the endangered Bermuda petrel, or cahow (Pterodroma cahow, sometimes considered a race of P. hasitata); the dark-rumped petrel, also called the Hawaiian petrel (P. phaeopygia), another endangered species, now concentrated almost entirely on the island of Maui; the phoenix petrel (P. alba), which breeds on several tropical archipelagos; and the black-capped petrel, or diablotin (P. hasitata), formerly found throughout the West Indies but now known only in Haiti.