Sebastian Cabanne at Evolution: ddRAD studies of Neotropical forest birds. At the Evolution conference in Brazil, our visiting collaborator from Argentina — Sebastian Cabanne — presented his studies of divergence and gene flow among populations of several Neotropical birds. Some of the underlying data were generated by Sebastian and Leo Campagna during an impressive research blitz this past year, in which they charged through a vast number of samples during a relatively short visit to our lab.