We tested hypotheses that prey population fluctuations limit reproduction in Common (Sterna hirundo) and Roseate (S. dougallii) terns. In a 2-year study, both species laid earlier, delivered more fish/hour to nests, grew faster, and survived better in the year when prey populations were higher. Common, but not Roseate, terns had larger clutches and broods in the better food year.
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Safina et al. (1988) studied this question.
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