Modern attempts to produce biogeographic maps focus on the distribution of species, and
the maps are typically drawn without phylogenetic considerations. Here, we generate a …

Differentiation and speciation without extended isolation appear to be common among
migratory animals. Historical oversight of this is probably due to temporal distortion in …

Although the migration ecology of birds breeding in the Neotropics is still poorly studied
relative to that of their counterparts breeding at north-temperate latitudes, studies conducted …

The timing of origin of modern North American bird species in relation to Pleistocene
glaciations has long been the topic of significant discussion and disagreement. Recently …

Background The Neotropical avifauna is more diverse than that of any other biogeographic
region, but our understanding of patterns of regional divergence is limited. Critical …

migrating but adults molt after; in other species both juveniles and adults migrate before
molting. Part of this variation may be explained by interspecific differences in the quality of …

Aim The origins of ecological diversity in continental species assemblages have long
intrigued biogeographers. We apply phylogenetic comparative analyses to disentangle the …

Together with patterns of speciation and extinction, post–speciation transformations in the
range sizes of individual species determine the form of contemporary species–range–size …

Interfamilial relationships of the New World songbird family Vireonidae are uncertain. Thus,
we sequenced 3069 bp of four mitochondrial genes (cyt b, ND2, ND3, COI) from 19 taxa in …

Phylogenetic relationships were studied based on DNA sequences obtained from all
recognized genera of the family Corvidae sensu stricto. The aligned data set consists 2589 …