INTRODUCTION Organisms in the early stages of speciation provide an opportunity to
understand the processes that govern reproductive isolation between taxa. Ecological or …

Phenotypic divergence can promote reproductive isolation and speciation, suggesting a
possible link between rates of phenotypic evolution and the tempo of speciation at multiple …

R. TERRY CHESSER, 1, 12, 13 RICHARD C. BANKS, 1 F. KEITH BARKER, 2 CARLA
CICERO, 3 JON L. DUNN, 4 ANDREW W. KRATTER, 5 IRBY J. LOVETTE, 6 PAMELA C …

Thraupidae is the second largest family of birds and represents about 4% of all avian
species and 12% of the Neotropical avifauna. Species in this family display a wide range of …

Recently diverged taxa provide the opportunity to search for the genetic basis of the
phenotypes that distinguish them. Genomic scans aim to identify loci that are diverged with …

The concept of a macroevolutionary trade-off among sexual signals has a storied history in
evolutionary biology. Theory predicts that if multiple sexual signals are costly for males to …

Animals rely on auditory cues to relay important information between individuals regarding
territoriality, mating status, and individual condition. The efficacy of acoustic signals can …

The tanagers (Thraupidae) are a major component of the Neotropical avifauna, and vary in
plumage colors, behaviors, morphologies, and ecologies. Globally, they represent nearly …

The following species are added to Colombia's bird checklist: Crimson Fruitcrow
Haematoderus militaris (based on observations), Varzea Thrush Turdus sanchezorum …

Spatial models show that genetic differentiation between populations can be explained by
factors ranging from geographic distance to environmental resistance across the landscape …