* Grasses: These are the bulk of their diet, with a preference for short, green grasses.
* Forbs: These are non-grass plants like wildflowers, legumes, and other herbs.
* Sedges: A type of grass-like plant found in wetlands.
* Willow: They sometimes browse on willow branches, especially during the winter.
* Other vegetation: Bisons may also consume other vegetation like leaves, bark, and twigs.
They will also eat a variety of plants based on the season and what is available.
During the summer, they eat a wide variety of grasses and forbs, as they are plentiful. In the winter, they graze on dormant grasses, browse on willow branches, and dig through snow to find other food sources.
Bisons are grazers, meaning they eat by grazing on the ground, using their large tongues and strong lower incisor teeth to tear off grass. They have a four-chambered stomach that helps them digest their plant-based diet.