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
Antipsara is a nesting site of the European shag ("Phalacrocorax aristotelis"), Eleonora's falcon ("Falco eleonorae"), Cory's shearwater ("Calonectris diomedea"), and the yelkouan shearwater ("Puffinus yelkouan"). Antipsara Antipsara () is a small Greek island in the Aegean Sea. Antipsara had 4 inhabitants according to the 2011 census. It lies about west of the larger island Psara, from which its name is derived. Geographic conditions make it inaccessible from the north and west side. Evidence exists of settlement in ancient Greek and Roman times. During the Ottoman rule the island served as a port. Nowadays, tourist trips to the island originate from Psara