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Photo of male frigatebird displaying on nest

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This male great frigatebird on Tower Island is in full display, with his throat pouch completely inflated. He uses this to attract females (think red corvette!) by pointing his bill to the sky and warbling loudly whenever a prospective female flies overhead. Note the veins in the throat pouch. Note also the haphazard collection of twigs that makes up nest—it's a primitive construction.

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