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Female promiscuity can function to acquire both direct and indirect benefits from their social mate and extra‐pair males. In many raptor species, intense mate‐feeding significantly contributes to female energy requirements before and during egg laying. Moreover, females may use mate‐feeding effort to assess male quality. In this study of the lesser kestrel Falco naumanni, we aimed at experimentally...
Reproductive promiscuity, whereby females are fertilized by extrapair mates, is common. The frequency of extrapair fertilizations (EPFs) depends on at least three sources of variation. First, females may differ in their proneness to being fertilized by extrapair males. Second, males may differ in traits that affect realized promiscuity of females. Third, EPF decisions depend on the combined effects...
Natural and sexual selection arise when individual fitness varies according to focal traits. Extra‐pair paternities (EPPs) can affect the intensity of selection by influencing variance in fitness among individuals. Studies of selection require that individual fitness is estimated using proxies of lifetime reproductive success (LRS). However, estimating LRS is difficult in large, open populations where...
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