Territorial male song sparrows from an eastern population were recorded in two long recording sessions, 4-18 days apart. At the end of the second recording session, each male was challenged with a 3-m
Conspecific brood parasitism (CP) is a facultative breeding tactic whereby females lay their eggs in the nests of conspecifics. In some species, potential host individuals have evolved the ability to
Dispersal is a critical driver of gene flow, with important consequences for population genetic structure, social interactions and other biological processes. Limited dispersal may result in kin-struc
Evolutionary theory predicts that when intrasexual competition is intense, risky behaviors can evolve if they enhance reproductive success. Here we tested the idea that polygynous males exhibit predic
How cuckoos find the nests of their hosts and choose nests with respect to egg phenotype for parasitism is a long-standing puzzle that has so far not been solved. We recently developed an experimental
