Audubon's shearwater underparts are white, as is the head below eye level. The iris is dark, the feet are dull pink with a black wash and black toenails, and the bill is grey, darker towards the tip, and with a pinkish hue. Males and females look alike. Immature birds do not have a distinct plumage, while the nestlings are covered with down feathers, grey above and whitish on the belly. It can be confused with the Manx shearwater ("P. puffinus"), which has white undertail coverts and in direct comparison a longer bill. Other similar-looking species are usually completely allopatric, though the largely
Wildlife of Morocco endemic bird species, the northern bald ibis ("Geronticus eremita") occurs here, and there are about 12 globally endangered species; the white-headed duck ("Oxyura leucocephala"), the Balearic shearwater ("Puffinus mauretanicus"), the northern bald ibis, the Egyptian vulture ("Neophron percnopterus"), the lappet-faced vulture ("Torgos tracheliotos"), the hooded vulture ("Necrosyrtes monachus"), the white-backed vulture ("Gyps africanus"), the Rüppell's vulture ("Gyps rueppelli"), the sociable lapwing ("Vanellus gregarius"), the slender-billed curlew ("Numenius tenuirostris"), the great knot ("Calidris tenuirostris") and the saker falcon ("Falco cherrug"). Other birds with restricted ranges in north Africa include the Levaillant's woodpecker ("Picus vaillantii"), the Moussier's redstart ("Phoenicurus moussieri") and the