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Keywords from Image Description:
Geospiza's bills . Bills of the genus Geospiza Geospiza strenua Geospiza magnirostris strenua Bindloe Island adult male Geospiza strenua Geospiza magnirostris strenua Bindloe Island adult male Geospiza strenua Geospiza magnirostris strenua Bindloe Island medium female Geospiza strenua Geospiza magnirostris strenua James