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Generalist and opportunistic species, such as the yellow-legged gull Larus michahellis, can feed on a wide variety of food from both marine and terrestrial origins. This work evaluates the potential foraging strategies (terrestrial, mix and marine) of the yellow-legged gull during the breeding season, in Berlenga (39°24′55″N, 9°30′28″W) and Deserta (36°57′45″N, 7°53′29″W) Islands, Portugal, across...