Every desert pocket mouse record in New Mexico comes from the state’s far southwest corner, the Peloncillo Mountains and Animas Valley near the Arizona and Mexico borders. That’s classic bootheel country: dry grassland and desert scrub with loose, sandy soil the mouse needs for digging.
With 158 GBIF records and only 4 from iNaturalist, most of what’s known here comes from trapping surveys rather than casual sightings. NatureServe ranks the species S3, Vulnerable, in New Mexico, even though it’s Least Concern globally, a reminder that a secure species elsewhere can still sit on thin ice at the edge of its range.
Reports cluster in May and July, but that’s likely when biologists were out trapping, not necessarily when the mouse is most active. It eats seeds from forbs, grasses, and shrubs, with the occasional insect for extra protein.



