Arizona mammals

Little pocket mouse in Arizona

Perognathus longimembris

Native to Arizona S5 Secure 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.

Little pocket mouse in Arizona, by the numbers

Occasional in Arizona 69th most recorded of 158 mammals logged in Arizona

570 occurrence records
1 with iNaturalist photos
Aug 12, 2024 Last seen in Arizona

Records from 2000–2026.

570 total records count every Arizona occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 543 records with a full observation date.

When to look for the Little pocket mouse in Arizona

Most sightings fall in April to May.

543 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
January3
February15
March10
April173
May141
June54
July52
August62
September9
October21
November3
December0

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

Seasonality

Year-round in Arizona, with recorded sightings peaking in April–May.

Occurrence map

Where Little pocket mouse has been recorded in Arizona

300 records mapped · zoom and drag to explore

300 Arizona records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Paria Canyon - Vermilion Cliffs Wilderness Area 28
Grand Canyon National Park 26
State Trust Land 17
Glen Canyon National Recreation Area 8
Grand Canyon-Parashant National Monument 7

Protected places with the most little pocket 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
Coconino County 221
Mohave County 154
La Paz County 82
Yuma County 71
Pinal County 8
Maricopa County 4
Pima County 3
Other localities 27

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.

Little pocket mouse holds a respectable mid-tier record in Arizona’s low desert scrub and sandy washes, one of the smallest rodents in North America and a species survey trapping documents far more reliably than casual sightings.

The record spikes hard in April and May, 33 and 71 sightings respectively, before dropping to single digits the rest of the year, a pattern almost certainly driven by spring trapping-survey timing rather than a true seasonal population surge in a species that is active whenever nighttime temperatures allow.

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"