The Western Harvest Mouse (Reithrodontomys megalotis) is locally common throughout the western two-thirds of the of the United States (lower 48 states except for the high Rocky Mtns).  This secretive rodent prefers open mesa habitats with thick grass and forb vegetation and a build-up of dense litter.  At HREC they can be found in the long-ungrazed portions of the Center.  Bristly fur, a long bi-colored tail, and whitish feet are all characteristics of this native species.