Few days ago Giacomo Biasi graduated at the University of Siena. In his M.Sc. thesis (title: "How weather conditions influence the flight strategies of migrating raptors: a case study from a migration bottleneck") he analyzed the flight behaviour of raptors in relation to weather conditions at Batumi bottleneck (Georgia). In particular the flight altitudes of raptors were analyzed showing species-specific behaviours. The data were collected in 2011 thanks to a collaboration between MEDRAPTORS and Batumi Raptor Count.