Introduction Due to the climate change discussion several governments aim to increase the production of renewable energy. Especially wind power is increasing in Germany and Europe. BRINKMANN et al. (2011) stated that the collision rate of bats with wind turbines (WT) in Germany is about 9-10 bats/WT/year. However, there is a huge variation between landscapes and geographical areas (NIERMANN et al. 2011, RYDELL et al. 2010). The reasons for this are that habitat types the distribution of bats and an area's importance for bat migration varies between landscapes. These factors influence the overall number of collisions and the species which are most affected. Our aim here is to present data on bat collisions for different wind farms in several landscapes in north-western Germany and to identify variables that might predict bat mortality in north-western Germany (see AMORIM et al. 2012, SANTOS et al 2013).