www.uwb.edu.pl University of Bialystok Faculty of Biology Godło UwB www.lasy.gov.pl Regional Directorate of State Forests in Białystok Lasy Państwowe https://olsztyn.pan.pl Polish Academy of Sciences Branch in Olsztyn and Białystok PAN www.iucn.org International Union for Conservation of Nature Grouse Group of the IUCN-SSC Galliformes Specialist Group IUCN
