1. Robbing behaviour of Roseate Terns;Dunn;Auk,1973
2. Effects of Great Skuas on Arctic Skuas in Shetland;Furness;Brit. Birds,1977
3. Studies on the breeding biology and population dynamics of the Great Skua (Catharacta skua Brünn.);Furness,1977
4. Ornithological studies on Foula in 1975 and 1976;Furness;Brathay Trust Field Studies Report No. 30,1977