The Four Canyon Preserve in northwestern Oklahoma encompasses 4,000 acres of mixed-grass prairie, rugged canyons and floodplains along the Canadian River in southern Ellis County. Scenic prairie ridges traverse the red earth, dissected by deep chinquapin oak-lined canyons draining to the river. These prairies provide a habitat for a number of rare grassland birds, like Cassin's sparrow and Swainson's hawk, along with additional species of reptiles like the Texas horned lizard and numerous state-rare plants. The cool, wooded canyons stand in contrast to the surrounding prairies and provide habitat for birds like the red-bellied woodpecker and painted bunting. Access is limited to personnel and is open for public visitation during events hosted by the Nature Conservancy.