Cecilia Nilsson is a postdoc at the Center for Macroecology, Evolution and Climate, Globe Institute, Københavns Universitet. She is a behavioral ecologist, primarily working with radar aeroecology to study flight behavior and animal migration. She worked with the European migration system during a postdoc at the Swiss Ornithological Institute and, most recently, with the American migration system during a postdoc at Cornell Lab of Ornithology. At CMEC she continues her research using large weather radar networks to understand factors influencing the movements of flying animals at continental scales.