We report the first breeding record of the White Tern (Gygis alba) in México. We also provide notes on parental behavior of this species on Socorro Island, Revillagigedo Archipelago, México. We observed two adults feeding one nestling during the summer of 2012 at a nest located on the naval base on Socorro Island. The White Tern is considered a vagrant species in the Revillagigedo Archipelago. Although a breeding colony was mistakenly reported earlier, our report positively confirms for the first time the breeding status of this species in México

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