1. Ashmole , N. P. 1961 The biology of certain terns: with special reference to the Black Noddy (Anoüs tenuirostris) and the Wideawake (Sterna fuscata) on Ascension Island. D. Phil Thesis Oxford University
2. The effect of age on the breeding biology of the Kittiwake Rissa tridactyla;Coulson;Proc. 7th Int. Om. Congr. Helsinki,1958
3. Some adaptations in the nesting behaviour of terns;Cullen;Proc. 7th Int. Om. Congr. Helsinki,1960
4. Census of Black-headed Gull colonies in England and Wales, 1958;Gribble;Bird Study,1962