Behavioral changes, such as those involved in mating, foraging, and migration, can
generate reproductive barriers between populations. Birds, in particular, are known for their …

Anthropogenically induced fragmentation constitutes a major threat to biodiversity.
Presently, conservation research and actions focus predominantly on fragmentation caused …

Local adaptation of populations along elevational gradients is well known, but conclusive
evidence that such divergence has resulted in the origin of distinct species in parapatry …

Studies of female mate choice commonly use virgin females as test subjects, either to control
for the effects of mating or because virgin females are presumed to be more responsive to …

Geographically isolated populations of birds often differ in song. Because birds often choose
mates on the basis of their song, song differentiation between isolated populations …

Social interactions are central in the lives of many animals. Social partners can lower
individual stress levels (Rault, 2012), a process known in humans and primates as social …

This revised third edition provides an up to date, comprehensive overview of the field of
comparative psychology, integrating both evolutionary and developmental studies of brain …

Animal culture evolves alongside genomes, and the two modes of inheritance—culture and
genes—interact in myriad ways. For example, stable geographic variation in culture can act …

Sexually transmitted microbes are hypothesized to influence the evolution of reproductive
strategies. Though frequently discussed in this context, our understanding of the …

Plasticity is often thought to accelerate trait evolution and speciation. For example, plasticity
in birdsong may partially explain why clades of song learners are more diverse than related …