Stress hormone level and the welfare of captive European bison (Bison bonasus): the effects of visitor pressure and the social structure of herds

Authors: Daniel Klich, Rafał Łopucki, Marta Gałązka, Agnieszka Ścibior, Dorota Gołębiowska, Rita Brzezińska, Bartosz Kruszewski, Tadeusz Kaleta, Wanda Olech

Publication/Journal: Acta Veterinaria Scandinavica

Keywords: aggression, cortisol, enclosure, feces, parasitological infestation, wisent, zoo