| paleoclimatic evolution as the main driver of current genomic diversity in the widespread and polymorphic neotropical songbird arremon taciturnus. | several factors have been proposed as drivers of species diversification in the neotropics, including environmental heterogeneity, the development of drainage systems and historical changes in forest distribution due to climatic oscillations. here, we investigate which drivers contributed to the evolutionary history and current patterns of diversity of a polymorphic songbird (arremon taciturnus) that is widely distributed in amazonian and atlantic forests as well as in cerrado gallery and season ... | 2020 | 32623766 |