During winter, life can be harsh for hundreds of Red Deer, Wild horses and many bird species, like Herons, Great Bittern etc, in this semi-wilderness in the central part of the Netherlands.
Especially when there is deep snow, lack of food causes starvation among the weak and the strongest will survive . So the survival of the fittest keeps the herds strong and healthy.
Also Foxes, which are quite common in this reserve, profit from carcasses of deer, cows and birds in winter. Maybe in future a pack of Wolves could do a great job as natural predators in this part of Holland.