1. Department of Vertebrate Ecology and Zoology Faculty of Biology University of Gdańsk Gdańsk Poland
2. Department of Biology and Animal Environment Faculty of Animal Breeding and Biology UTP University of Science and Technology Bydgoszcz Poland
3. Sierpc Poland
4. Łódź Poland
5. Department of Biodiversity Studies and Bioeducation Faculty of Biology and Environmental Protection University of Łódź Łódź Poland