The robbing behaviour of terns and gulls
Hulsman, K. (1976). The robbing behaviour of terns and gulls. Emu 76(3): 143-149
In: Emu: journal of the Royal Australasian Ornithologists Union. CSIRO Publishing (Commonwealth Scientific and Industrial Research Organization): Melbourne. ISSN 0158-4197; e-ISSN 1448-5540, more
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