Arizona mammals

Plains Harvest Mouse in Arizona

Reithrodontomys montanus

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.

Plains Harvest Mouse in Arizona, by the numbers

Rare in Arizona 142nd most recorded of 158 mammals logged in Arizona

2 occurrence records
1 with iNaturalist photos

Records from 2000–2026.

When to look for the Plains Harvest Mouse in Arizona

Most sightings fall in June.

2 Arizona occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence. Based on a small number of dated records; the seasonal pattern may not be representative.

Monthly Arizona records (table)
MonthRecords
January0
February0
March0
April0
May0
June1
July0
August0
September0
October0
November1
December0

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

Seasonality

Sparse observation record in Arizona; presence confirmed but timing of activity not well documented.

Occurrence map

Where Plains Harvest Mouse has been recorded in Arizona

2 records mapped · zoom and drag to explore

2 Arizona records mapped

Where it's recorded in Arizona

CountyRecords
Santa Cruz County 1
Cochise County 1

The complete county distribution, spread across 2 Arizona counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Plains harvest mouse reaches only the northeastern grassland fringe of Arizona, at the southwestern edge of a range centered on the Great Plains. With just one logged sighting, in November, it sits near the very bottom of the state’s mammal record.

A single record this thin can’t support any seasonal claim; it simply confirms the species’ presence at the edge of its range rather than describing when it’s actually active.

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