Many humans, less European Bisons...
Out of all mammals living on the European continent, the European Bison is the largest! The European Bison once lived in the forests all over Europe. But as the human population grew, the forests were destroyed and European Bisons were hunted. They were disappearing and what makes the situation worse, European Bisons were used as food in World War I. They once became extinct in the 1920s.

Let's bring surviving European Bison back to the wild!
Luckily, about 50 European Bisons survived in zoos and wildlife parks. In the 1950s there was a movement to increase them and return them to the wild. They escaped extinction, just in time. However, even now, there aren't too many European Bisons. They could all die from illness. We need to watch them carefully for some time yet.