Other Names: none
Distribution: Deep Pacific waters, excluding those off South America; approaches land near Australia and New Zealand.
Size: 33-35 cm in length with a 74-82 cm wingspan.
Plumage: The upper back is gray, with a darker M shape across the back, rump and wings. The face is white mottled with gray and with a dark patch under the eye. The underside of the wing is white, with a broad black band running diagonally from the bend of the wing towards the body, and the tip and trailing edge of the bottoms of the wings are dark. The bill is black and the eyes are black with black eyelids.