The Hopi chipmunk (Neotamias rufus) is a small chipmunk found in Colorado, Utah and Arizona in the southwestern United States. It was previously grouped with the Colorado Chipmunk, T. quadrivittatus. Hopi chipmunks prefer rocky areas with pinion and juniper pines and feed mostly on nuts, seeds and fruits. Food gathered is stored in cheek pouches and taken elsewhere for consumption or storage. They nest in rock piles or crevices. Habitat: This is the common chipmunk of much of the canyon and slickrock piñon-juniper country in western Colorado. Population densities appear to be highest in areas with an abundance of broken rock or rubble at the base of cliff faces or in rock formations with deep fissures and crevices suitable for den sites.