Predation and Anti-Predator Behaviour in a Mixed Colony of Terns Sterna sp. and Black-Headed Gulls Larus ridibundus with Special Reference to the Sandwich Tern Sterna sandvicensis

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Abstract
Predation and anti-predator behaviour were studied on the Stands of Forvie, Scotland, during 1973 and 1974. The main predator on eggs of Sandwich Terns was the ...