Clutch Size in Birds: Outcome of Opposing Predator and Prey Adaptations

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Science  01 May 1970:
Vol. 168, Issue 3931, pp. 599-600
DOI: 10.1126/science.168.3931.599


A model is proposed to explain clutch size in birds as the outcome of the interaction between predatory adaptations of birds to increase their feeding efficiency and adaptations of their food resources to avoid predation. Variations in clutch size are consistent with the model. A modification that incorporates the seasonality of food resources is also discussed.

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