When temperatures drop in Montana, wild bison migrate to lower elevations outside the boundaries of Yellowstone National Park. But once outside, they run the risk of being killed because some carry a chronic disease called brucellosis that ranchers fear could spread to cattle.
Release Date : Aug 25, 2014
Genres : Documentary
Production Company : Forest Clay Productions
Production Countries : United States of America
Original Language :
Casts :
Director :
Status : Released
Budget : 0
Revenue : 0

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