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Article
Identifying the factors that influence geographic range limits can illustrate the various ecological, physiological, and evolutionary constraints imposed on a species. The range limits of migratory birds are particularly challenging to study as [...]
Article
Mehdi Khadraoui, Auteur ; David P. L. Toews, AuteurABSTRACT While communal roosting is fairly common in animals, the costs, benefits, and proximal factors influencing this behavior are poorly understood. Moreover, many species with communal roosting that have been studied to date have a strong a[...]
Article
Sampath S. Seneviratne, Auteur ; David P. L. Toews, Auteur ; Alan Brelsford, Auteur ; Darren E. Irwin, AuteurHybridization has presented a challenge for taxonomists and conservation biologists, since hybridizing forms could be stable evolutionary entities or ephemeral forms that are blending together. However, hybrid zones also provide a unique opportu[...]
Article
Darren E. Irwin, Auteur ; Alan Brelsford, Auteur ; David P. L. Toews, Auteur ; Christie MacDonald, Auteur ; Mark Phinney, AuteurThere are many pairs of related western and eastern avian taxa in North America, and for many of these, little is known about their interactions in sympatry. One example is provided by MacGillivray's warblers Oporornis tolmiei and mourning warbl[...]
Article
David P. L. Toews, Auteur ; Alan Brelsford, Auteur ; Darren E. Irwin, AuteurHybrid zones between species provide natural systems for the study of processes involved in divergence, reproductive isolation and speciation. Townsend's Dendroica townsendi and black-throated green D. virens warblers are phenotypically and gene[...]
