Cook's Petrel Pterodroma cookii

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Appearance

Distinguishing Characteristics

27 cm. 164 g. Bill black. Upperparts gray with blackish M pattern covering the wings and rump. Head pale gray with dark eye-patch does not contrast with back. Underparts white. Wings long, slender, with narrow black margins. Tail blackish distally, whitish outer feathers, rarely visible at sea. Legs blue-gray. Males and females are similar.

Similar Species

StejnegerĀ“s Petrel (Pterodroma longirostris) has a dark cap. BullerĀ“s Shearwater (Puffinus bulleri) has a similar pattern on wings but is larger (41 cm), crown blackish, wedge-shaped tail and legs whitish.

Detailed Description

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Recommended Citation

Cook's Petrel (Pterodroma cookii), In Neotropical Birds Online (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. retrieved from Neotropical Birds Online: https://neotropical.birds.cornell.edu/Species-Account/nb/species/coopet