Yellowstone Sepia Snow | Hard Winter Winter in Yellowstone can be so beautiful, and at the same time, so grueling for the wildlife. Bison lose so much weight from fall to spring just trying to survive the Yellowstone Winter, nine percent of adult bison will die during the winter. Many of these bison entered winter in poor condition due to age, disease, or injuries. Young bison face a higher risk of dying: 20 – 40 of every 100 first-year bison die from accidents, winter exposure, or predators. For the whole story with all images, see Yellowstone Sepia Snow | a 7 Image Story.
