Annet, Isles of Scilly have nationally important breeding populations. The storm–petrel breeds amongst the boulders of the more stable storm beaches. The largest population of Manx shearwater ("Puffinus puffinus") in the islands breed here and the other annual breeding species are puffin ("Fratercula arctica"), greater black-backed gull ("Larus marinus"), razorbill ("Alca torda"), kittiwake ("Rissa tridactyla"), fulmar ("Fulmarus glacialis"), herring gull ("L. argentatus") and shag ("P. aristotelis"). Common tern ("Sterna hirundo") breed on the island most years as do cormorant ("Phalacrocorax carbo") and very rarely Arctic tern ("S. paradisaea"). Annet has long had a reputation for being the best island for breeding birds and Jessie
Heinroth's shearwater behaviour of close relatives). There is very little information about the species and it is uncertain if it is threatened or in decline. BirdLife International (2006) Species factsheet: Puffinus heinrothi. Downloaded from http://www.birdlife.org on 26/7/2006 Heinroth's shearwater Heinroth's shearwater ("Puffinus heinrothi") is a poorly known seabird in the family Procellariidae. Probably a close relative of the little shearwater or Audubon's shearwater (with which it is sometimes considered conspecific), it is distinguished by a long and slender bill and a brown-washed underside. This species is restricted to the seas around the Bismarck Archipelago and northern Solomon Islands. The breeding sites of