Here we propose a series of experiments on the energetics and aerodynamics of avian flight and migratory behavior, to be performed at Lund University. In Experiment 1, we will be examining the effects of turbulence on the energy use of migratory birds in order to better understand how atmospheric conditions affect migrants and what effects climate change may have on them. In Experiment 2, we will be quantifying both the energetic and aerodynamic costs of natural and simulated molt; molt is one of the most important life-history events in the avian annual cycle. Finally, in Experiment 3, we will be studying the energetics of Common Swifts (Apus Apus) during both foraging flight and aerial roosting, when they are thought to sleep on the wing. We will be using a combination of wind tunnel work and field observations, and will use our results to update theoretical models of avian flight behavior. In the end, we hope to make significant advances in our understanding of avian flight and migratory behavior as well as form trans-Atlantic friendships which will result in future scientific collaborations.