Yelkouan shearwater Menorca. A study of these birds recommended that a combination of morphological characteristics and DNA sequence data should be required at least for scientific purposes to assign individual birds to either species. It was formerly considered a subspecies of the Manx shearwater (see there for more on the "Puffinus puffinus" superspecies). After the first split, it was the nominate subspecies of the so-called "Mediterranean shearwater" for nearly ten more years; it is considered a monotypic species now, as the Balearic form "mauretanicus" has been separated as the Balearic shearwater. The yelkouan shearwater appears to belong to a group of Mediterranean
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