Abstract
The island of Fehmarn, situated off the German Baltic coast, is well-known for being a hotspot for bird migration. It is assumed that about 100 m Scandinavian birds cross the island each year using the shortest connection between the South of Sweden (Falsterbo), the Danish Baltic islands and the German mainland. To investigate the influence of the existing 4 wind farms on bird (and bat) migration and to be able to assess the possible impact of future developments, a comprehensive research project was carried out in 2009.