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

It has long been of interest to identify the phenotypic traits that mediate reproductive isolation
between related species, and more recently, the genes that underpin them. Much work has …

A long-held view in evolutionary biology is that character displacement generates divergent
phenotypes in closely related coexisting species to avoid the costs of hybridization or …

Passive acoustic monitoring is a reliable method to study species behaviour and ecology,
enabling the discovery of species activity patterns, especially in remote locations. Here, we …

Effective communication in birds is often hampered by background noise, with much
research focusing on the effect of anthropogenic noise on passerine bird song. Continuous …

Physiological constraints related to atmospheric temperature pose a limit to body and
appendage size in endothermic animals. This relationship has been summarised by two …

Most studies on the processes driving evolutionary diversification highlight the importance of
genetic drift in geographical isolation and natural selection across ecological gradients …

The Andean and Atlantic forests are separated by the open vegetation corridor, which acts
as a geographic barrier. However, these forests experienced cycles of connection and …

Islands have been characterized as natural laboratories because of their distinct and often
identifiable role in promoting genetic variation and population differentiation, but they have …

Incomplete reproductive isolation between related species of birds at contact zones is
increasingly being documented. Such hybridization typically occurs between sister taxa that …