Reintroducing bison and prescribing fires can benefit grassland bird species. When bison and fire return to tallgrass prairies, grassland birds overall benefit. In the Midwestern U.S., few remnant prairies remain. As Europeans colonized westward across America, they drove out Indigenous communities by killing off their main resource-bison (Bison bison). As colonizers forced Indigenous people off their land, the fire they kindled also stopped, and the new settlers converted most of the land to agriculture.