1. Effects of telemetry transmitter weight on breeding success in Herring Gulls;Amlaner;Biotelemetry,1978
2. Courtship behaviour in the Lesser Black-backed Gull;Brown;Behaviour,1967
3. The incubation rhythm of the female Pied Flycatcher in the presence and absence of the male;Haartman;Ornis Fenn.,1958
4. Experiments on the ability of Herring Gulls Larus argentatus and Lesser Black-backed Gulls L. fuscus to raise larger than normal broods;Harris;Ornis Fenn.,1965
5. Henley , C. A. 1979 Factors influencing egg loss and chick mortality in Layus argentatus and L. fuscus Unpubl. D. Phil. thesis