In the past bison roamed the prairies in massive herds, eating and trampling grass and adding nutrients as they went. Today we use other grazers, primarily cattle, to manage our grasslands. When used properly, grazing is a useful tool for controlling exotics, reducing dead plant material, and increasing nutrient cycling to improve a stand of grass. Since we don't own our own livestock, special use permits are used with private landowners for a set time period and grazing rate. Landowners benefit by resting some of their pastures and we get improved nesting cover and habitat for wildlife.