Small herd of wisent ( Bison Bonasus ) was reintroduced in the area in 2004.
2.
These hybrids are described as a different subspecies, the highland bison ( " Bison bonasus montanus " ).
3.
The "'Carpathian wisent "'( " Bison bonasus hungarorum " ) was a subspecies of European bison that inhabited the Carpathian Mountains, Moldavia, and Transylvania.
4.
The modern herds are managed as two separate lines one consisting of only " Bison bonasus bonasus " ( all descended from only seven animals ) and one consisting of all 12 ancestors, including the one " B . b . caucasicus " bull.
5.
In 1929, a small herd of four was bought by the Polish state from various zoos and from the Western Caucasus ( where the bison was to become extinct just a few years; these animals were of the slightly different Caucasian subspecies ( " Bison bonasus caucasicus " ).