Arizona mammals

Northern Rock Mouse in Arizona

Peromyscus nasutus

Native to Arizona S3 Vulnerable in Arizona

Not listed as nonindigenous in Arizona by USGS NAS; native to its Arizona range.

IUCN Red List status

  1. LC
  2. NT
  3. VU
  4. EN
  5. CR
  6. EW
  7. EX

LC – Least Concern

Widespread and abundant; not at risk.

Northern Rock Mouse in Arizona, by the numbers

Rare in Arizona 122nd most recorded of 158 mammals logged in Arizona

238 occurrence records

Records from 2000–2026.

When to look for the Northern Rock Mouse in Arizona

Most sightings fall in January.

238 Arizona occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly Arizona records (table)
MonthRecords
January155
February15
March0
April5
May23
June8
July14
August1
September5
October8
November3
December1

Monthly northern rock mouse occurrence records (iNaturalist and GBIF) in Arizona, 2000–2026.

Seasonality

Year-round in Arizona, with recorded sightings peaking in January.

Occurrence map

Where Northern Rock Mouse has been recorded in Arizona

238 records mapped · zoom and drag to explore

238 Arizona records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Chiricahua Wilderness 13
Coronado National Forest 8

Protected places with the most northern rock mouse sightings, from the USGS Protected Areas Database plus named mountain ranges, good spots to look, not a full breakdown, so they don't sum to the total.

Where it's recorded in Arizona

CountyRecords
Apache County 174
Cochise County 50
Coconino County 8
Navajo County 2
Santa Cruz County 2
Graham County 1
Gila County 1

The complete county distribution, spread across 7 Arizona counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Northern rock mouse lives among boulder piles and rocky outcrops in Arizona’s higher country, a habitat specialist whose bottom-quarter record likely reflects how much of that rugged terrain goes unsurveyed rather than true scarcity.

Every logged sighting falls in a single July count, a pattern that reads as one trapping survey rather than a true seasonal peak; a rock-crevice specialist this rarely documented needs a longer record before any month can be called typical.

More mammals in Arizona in the atlas

Data & sources

The data and visualizations on this page draw on these open sources:

  • GBIFCC-BY 4.0occurrence records behind the range map, elevation, and record counts
  • iNaturalistCC0 / CC-BY / CC-BY-SAobservations, photos, and audio recordings
  • NatureServe ExplorerCC-BYthe state conservation rank
  • IUCN Red Listattributed factthe global conservation status
  • USGS NASpublic domainnative / introduced status
  • Natural Earthpublic domainthe relief basemap
  • USFSpublic domainnational-forest boundaries
  • USGS Protected Areas Databasepublic domainthe named parks, forests, and refuges behind "notable places to look"