Almost 30 y ago, the field of intraspecific phylogeography laid the foundation for spatially
explicit and genealogically informed studies of population divergence. With new methods …

Megascops is the most species-rich owl genus in the New World, with 21 species currently
recognized. Phylogenetic relationships within this genus are notoriously difficult to establish …

The avian world is packaged into genetic assemblages that we call species. Although
ornithologists can, with a few important exceptions, agree on the boundaries among avian …

As we collect range-wide genetic data for morphologically-defined species, we increasingly
unearth evidence for cryptic diversity. Delimiting this cryptic diversity is challenging, both …

The Andean mountains stand out for their striking species richness and endemicity that
characterize many emblematic Neotropical clades distributed in or around these mountains …

Several ecogeographical 'rules' have been proposed to explain colour variation at broad
spatial and phylogenetic scales but these rarely consider whether colours are based on …

Geographic turnover in community composition is created and maintained by eco-
evolutionary forces that limit the ranges of species. One such force may be antagonistic …

The immense concentrations of vertebrate species in tropical mountains remain a prominent
but unexplained pattern in biogeography. A long-standing hypothesis suggests that …

Tropical mountains are global biodiversity hotspots, owing to a combination of high local
species richness and turnover in species composition. Typically, the highest local richness …

A fascinating pattern in nature is the uneven distribution of biodiversity among clades, some
with low species richness and phenotypic variation in contrast to others with remarkable …