Small gray-and-white gadfly petrel. Note distinctive dark gray cap extending from the crown down the sides of the face, nape and neck to the wing, contrasting with white face. Upperwings dark gray with distinctive dark ‘M’ that extends across the wings. Underparts all white apart from a broad black band at the bend of the wing which extends towards the tip and diagonally back towards, but not reaching, the body. Two subspecies; breeds off of New South Wales and along the central mountain range of New Caledonia respectively. Migrates east and north across Pacific Ocean after breeding. Distinguished from other gadfly petrels by darker cap, and broader dark band on underwing. Can be seen feeding in association with other seabirds, tuna and dolphins.