There are very few places left in Europe, to watch the European Bison (Bison bonasus bonasus). Białowieża Forest in NE-Poland is surely the most famous. However just about 80 years ago, it was the only place in the world to watch this animal in the wild. During First World War, all bisons living in the wild had been killed. Thanks to a captive breeding programme, it was possible to perpetuate the species. First animals from this programe were released in Białowieża Forest.
Today, the forest is home for about 600 bisons. You will easily find the tracks on the paths as well as faeces (which are home to Geotrupes mutator – a dung beetle).

It is very difficult to see the bisons themselves and you need some luck! During a visit last year, I found four bulls on a meadow. It is really impressive to be face to face with this animal. The bulls are up to 1.90 m high, 3 m long and weigh up to 900 kg.
If they are approaching, you should try to leave very fast…