Diet
Bison have a fairly simple diet. The bison's main food is grass. Bison also eat the low-lying shrubbery that is available. In the winter, bison forage in the snow looking for grass. If there is little grass available, bison have to resort to eating the twigs of shrubs. They will also consume sedges. One difference between bison and domestic cattle is that bison are notably better at browsing than cattle, since cattle are more obligate grazers.
Wisent are noted to browse more often on shrubs and low hanging trees than their American bison cousins that generally prefer grass, if given a choice.
Read more about this topic: Bison
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