Plains harvest mice are tiny grassland specialists, barely 3 inches long and about as light as two paper clips, restricted entirely to open prairie rather than woodland or desert. Texas records cluster around the canyon-country grasslands of the Panhandle and High Plains, Palo Duro Canyon State Park, Caprock Canyons State Park, and Muleshoe National Wildlife Refuge, where native shortgrass and mixed-grass prairie still survive largely intact.
Of 548 Texas records, the vast majority come through GBIF rather than iNaturalist, so survey and specimen work is doing most of the documenting for a mouse this small and secretive. Sightings peak sharply in March, tapering to almost nothing by September; NatureServe ranks the species secure (S5) in Texas, so that spring bump most likely tracks when field surveys ran rather than a real seasonal swing in the mouse’s own activity.
Full species profile
