Climate change is profoundly affecting the evolutionary trajectory of individual species and
ecological communities, in part through the creation of novel species assemblages. How …

Behavioral interference between species, such as territorial aggression, courtship, and
mating, is widespread in animals. While aggressive and reproductive forms of interspecific …

Species delimitation requires a broad assessment of population-level variation using
multiple lines of evidence, a process known as integrative taxonomy. More specifically …

Speciation is one of the most important processes in biology, yet the study of the genomic
changes underlying this process is in its infancy. North American warbler species …

Understanding the mechanisms that govern interspecific hybridization is vital to mitigating its
impacts on endangered species. Research suggests that behavioral mechanisms such as …

Hybrid zones are particularly valuable for understanding the evolution of partial reproductive
isolation between differentiated populations. An increasing number of hybrid zones have …

Interspecific territoriality occurs when individuals of different species fight over space, and
may arise spontaneously when populations of closely related territorial species first come …

Divergent mitonuclear coadaptation could facilitate speciation. We investigate this possibility
in two hybridizing species of warblers, Setophaga occidentalis and S. townsendi, in western …

Research on sexual selection and hybridization has focused on female mate choice and
male–male competition. While the evolutionary outcomes of interspecific female preference …

Multilocus clines between Müllerian mimetic races of Heliconius butterflies provide a classic
example of the maintenance of hybrid zones and their importance in speciation. Concordant …