1. Institute of Vertebrate Biology, Academy of Sciences, Brno, Czech Republic.
2. Museum and Institute of Zoology, Polish Academy of Sciences, Warsaw, Poland
3. Adam Mickiewicz University, Department of Behavioural Ecology, Poznań, Poland.
4. University of Zielona Góra, Faculty of Biology, Zielona Góra, Poland.
5. Warsaw Zoological Garden, Warsaw, Poland
6. University of Warmia and Mazury, Faculty of Animal Bioengineering, Olsztyn, Poland.
7. Department of Teacher Training and Biodiversity Studies, University of Lodz, Poland.