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Abstract

abstract

Petrel remains were collected from around 27 subantarctic skua Catharacta antarctica nests at Marion Island. Skuas took seven species of burrowing petrels, with Salvin’s prion Pachyptila salvini forming the dominant prey item. The use of skua remains as indicators of petrel was shown for two areas where the density and composition of petrel burrows had been determined. Although the composition of the remains was related mainly to the abundance of the petrels, breeding season and size also determined how well different species were represented.