Cook's Petrel

Small seabird, pale with an exceptionally long and thin black beak. White forehead, extending like a barely marked eyebrow over a dark bar below the eye and behind it. The upperparts are palish grey, with slightly darker flight feathers. A broad V-shaped, brown-black band crosses the upper parts joining one wrist to the other and passing through the rump. The undersides are almost purely white. The tips of the flight feathers are dark, as is the border of the first primary flight feathers. A half-black parenthesis starts from the wrist towards the body of the bird. This last character allows to distinguish this species of Pterodroma nigripennis, the only species with which the risk of confusion exists. This species is known as Cook's Petrel.