The main focus of the group concerns the understanding of the interplay of population structure, trait architecture, and selection. For this, we use different approaches, from theory and the development of statistical tools to field observations. The main biological models currently used are the barn owl (in collaboration with Alexandre Roulin), and Miniopterus bats (with Philippe Christe). On the theoretical side, we investigate the dynamics of multilocus genetic system under the influence of selection, migration and drift, developed conprehensive individual based models and develop statistical methods to infer selection, mating systems and population structure.