St Levan common species such as northern gannet ("Morus bassanus"), Manx shearwater ("Puffinus puffinus"), common guillemot, ("Uria aalge") and razorbill ("Alca torda"), as well as rarer birds such as Balearic shearwater ("Puffinus mauretanicus") and Cory's shearwater ("Calonectris borealis"). The headland of Tol-pedn (or Gwennap Head) is favoured by birdwatchers and many travel the length and breadth of Britain to track rare seabirds. Some of the butterflies that can be found on the coast include grayling ("Hipparchia semele"), silver-studded blue ("Plebejus argus"), small pearl-bordered fritillary ("Boloria selene") and wall ("Lasiommata megera"). There is also a day-flying moth, the thrift clearwing ("Synansphecia muscaeformis"); the
Flesh-footed shearwater Flesh-footed shearwater The flesh-footed shearwater ("Ardenna carneipes"; formerly "Puffinus carneipes") is a medium-sized shearwater. Its plumage is black. It has pale pinkish feet, and a pale bill with a distinct black tip. Together with the equally light-billed pink-footed shearwater, it forms the "Hemipuffinus" group, a superspecies which may or may not have an Atlantic relative in the great shearwater. These are large shearwaters which are among those that have been separated in the genus "Ardenna". It breeds in colonies, and has two main breeding areas: one in the southwest Pacific Ocean includes Lord Howe Island (16,900 pairs ), South Australia