In the past decade, advances in genome sequencing have allowed researchers to uncover
the history of hybridization in diverse groups of species, including our own. Although the …

Ecologically mediated selection against hybrids, caused by hybrid phenotypes fitting poorly
into available niches, is typically viewed as distinct from selection caused by epistatic …

Recent biological invasions offer 'natural'laboratories to understand the genetics and
ecology of adaptation, hybridization, and range limits. One of the most impressive and well …

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 …

Complex speciation, involving rapid divergence and multiple bouts of post-divergence gene
flow, can obfuscate phylogenetic relationships and species limits. In North America, cases of …

Secondary contact between species often results in the formation of a hybrid zone, with the
eventual fates of the hybridizing species dependent on evolutionary and ecological forces …

Natural hybrid zones have provided important insights into the evolutionary process, and
their geographic dynamics over time can help to disentangle the underlying biological …

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

Hybrid zones are natural experiments for the study of avian evolution. Hybrid zones can be
dynamic, moving as species adjust to new climates and habitats, with unknown implications …