The effect of age at first breeding on Ural owl lifetime reproductive success and fitness under cyclic food conditions



: Brommer JE, Pietiainen H, Kolunen H

Publisher: BLACKWELL SCIENCE LTD

: 1998

Journal of Animal Ecology

JOURNAL OF ANIMAL ECOLOGY

: J ANIM ECOL

: 67

: 3

: 359

: 369

: 11

: 0021-8790

DOI: https://doi.org/10.1046/j.1365-2656.1998.00201.x


8. Cyclic fluctuation in food supply clearly constrains the option as to during what phase and at what age to start breeding. In terms of fitness, the optimal age to start breeding depends on the phase of the vole cycle at hatching.



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