1. Machine Listening Lab, Centre for Digital Music, Queen Mary University of London, London, UK
2. Department of Ecology, Faculty of Science, Charles University, Prague, Czech Republic
3. Institute of Vertebrate Biology, The Czech Academy of Sciences, Brno, Czech Republic
4. Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic
5. Department of Behavioural Ecology, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland