Phylogenetic comparative analysis

Global incidence of female birdsong is predicted by territoriality and biparental care in songbirds
Pronounced sexual dimorphism is generally assumed to evolve through sexual selection for elaborate male traits. However, there is …
Sex role similarity and sexual selection predict male and female song elaboration and dimorphism in fairy-wrens
Historically, bird song complexity was thought to evolve primarily through sexual selection on males; yet, in many species, both sexes …
Breeding season length predicts duet coordination and consistency in Neotropical wrens (Troglodytidae)
Many animals produce coordinated signals, but few are more striking than the elaborate male–female vocal duets produced by some …