Jean-Claude Thibault, Richard Zotier, Isabelle Guyot, Vincent Bretagnolle, Recent Trends in Breeding Marine Birds of the Mediterranean Region with Special Reference to Corsica, Colonial Waterbirds, Vol. 19, Special Publication 1: Ecology, Conservation, and Management of Colonial Waterbirds in the Mediterranean Region (1996), pp. 31-40
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Thibault et al. (1996) studied this question.
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