Attendance of scavenging seabirds at trawler discards off Galicia, Spain

摘要: The occurrence of scavenger seabirds at fishing trawlers was studied off Galicia, Spain. A total 9,368 23 species were recorded during 92 operations in 1998 and 1999. most common the yellow-legged lesser black-backed gull ( Larus cachinnans L. fuscus ), Sabine´s sabini northern gannet Morus bassanus great shearwater Puffinus gravis sooty (P. griseus), Manx Balearic P. puffinus mauretanicus skua Catharacta ) terns (mainly Sterna hirundo S. paradisaea ). Other occurred small numbers: Leach´s petrel Oceanodroma leucorhoa storm Hydrobates pelagicus little assimilis Cory´s Calonectris diomedea parasitic Stercorarius parasiticus pomarine pomarinus black-headed ridibundus glaucous hyperboreus kittiwake Rissa tridactyla sandwich tern (Sterna sandvicensis), black (Chlidonias niger), guillemot Uria aalge auk Alle alle maximum number a haul 320. particular ranged from 120 shearwaters to 250 yellow-legged/lesser gulls single haul. differences ship-follower abundance are related migratory movements but fisheries could also have strong influence smaller scale on distribution Galicia. degree which rely fishery discards as food not quantified, may be important for several species.