Current population numbers of European Bison at the end of 2003 were just released, currently for Poland. The population grew, and there are 2820 wisents, including 194 in zoos, wildlife parks and enclosed herds, and 2626 in the wild.
Wild populations are:
1. BIESZCZADY – 802
2. LASY JANOWSKIE – 10
3. PUSZCZA AUGUSTOWSKA – 27
4. PUSZCZA BIAŁOWIESKA – 892
5. PUSZCZA BORECKA – 136
6. PUSZCZA KNYSZYŃSKA – 322
7. PUSZCZA ROMINCKA – 9
8. STADA W ZACHODNIEJ POLSCE (West Poland) – 428.
Source:
Białowieski Park Narodowy | Białowieza
My comments:
In West Poland, few years ago one sub-herd settled only 35 km from the German border and continues to live there. I keep waiting when some cross the border. There are several large forests in the East Germany, including these abandoned military areas, and dispersal is the best insurance against disease and other threats. In the West Poland, several cases of poaching of Wisent were found again in 2023. This is worrying also because over-eager hunters in West Poland are potentially a danger to people, too. Wisent are likely shot by over-enthusiastic or shortsighted hunters hoping for red deer or wild boar. Unfortunately, health tests and supervision of hunting clubs in Poland are often fiction. Still, the Wisent population in West Poland is growing. Interestingly, the increase from 349 in 2022 to 428 in 2023 is higher than realistically possible by breeding. Probably some Wisents were lost to counts in the 2010s, when one year there was a visible dip in the number of counted cows. They probably dispersed to an unknown place and reappeared in 2023.