Presence of nesting lesser black backed gulls larus fuscus graellsii and great black backed gulls larus marinus in an urban colony of herring gulls larus argentatus argenteus. Gerfaut 79(1-4): 153-158, 1989
Recent extensions of the breeding range of great black-backed gulls (Larus marinus) in the Great Lakes of North America. Ontario Birds, 102: 64-71, 1992
The feeding habits of great black backed gulls larus marinus and glaucous gulls larus hyperboreus in iceland. Acta Naturalia Islandica (24): 1-19, 1976
Responses to mate loss by herring gulls larus argentatus and great black backed gulls larus marinus. Ornis Scandinavica 20(1): 53-58, 1989
Herring gulls Larus argentatus and great black-backed gulls Larus marinus as rocky-shore predators. 1992
The molt of remiges and rectrices in great black backed gulls larus marinus and glaucous gulls larus hyperboreus in iceland. Ibis 112(1): 83-92, 1970
Haematology and blood chemistry of healthy and clinically abnormal great black-backed gulls (Larus Marinus) and herring gulls (Larus Argentatus). Avian Pathology 21(2): 215-223, 1992
Wintering area of great black backed gulls larus marinus and herring gulls larus argentatus from heinasaaret the arctic ussr and the northern baltic in 1930 1940. Ornis Fennica 60(3): 91-93, 1983
Diet and feeding ecology of great black backed gulls larus marinus at a southern irish breeding colony. Journal of Zoology (London) 222(3): 363-374, 1990
Breeding biology of great black-backed gulls Larus marinus at a declining colony Cape Clear Island, Co Cork. Irish Naturalists' Journal 24(10): 388-392, 1994
The feeding habits of great black-backed gulls, Larus marinus, and glaucous gulls, L. hyperboreus, in Iceland. Acta nat. islandica, 24,1976: 1-19, 1977
Distribution, population size and seasonal dynamics of great black-backed gulls Larus marinus in the German bight, North Sea Verbreitung, Bestand und Jahresdynamik der Mantelmoewe Larus marinus in der Deutschen Bucht, Nordsee. Corax, 19: 43-50 (Sonderheft 2, 2003
Behavioral responses to human intruders of herring gulls larus argentatus and great black backed gulls larus marinus with varying exposure to human disturbance. Behavioural Processes 8(4): 327-344, 1983
Great black backed gulls larus marinus and herring gull larus argentatus with hanging wings. Limosa 60(2): 84, 1987