European bison
Heck cattle and horses were introduced in 1999, European bison were introduced a few years later. In 2007 there were more than 80 heck cattle and more than 100 horses in the reserve. European bison were still below 20 and slowly increasing. Before the introduction of the three large herbivore species, the reserve was already home to moose, red deer, roe deer, wolf and lynx. So the reserve harbours now an almost complete holocene mammal fauna.