Utah mammals

Olive-backed Pocket Mouse in Utah

Perognathus fasciatus

Native to Utah S1 Critically Imperiled in Utah

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

Olive-backed pocket mouse in grass and dry litter at nightOlive-backed pocket mouse crouched on sandy soil at nightOlive-backed pocket mouse emerging from a burrow in loose soilOlive-backed Pocket Mouse (Perognathus fasciatus)
Photo: Alessandro Franchini · CC BYOlive-backed pocket mouse in grass and dry litter at nightPhoto: Ellyne Geurts · CC0Olive-backed pocket mouse crouched on sandy soil at nightPhoto: Ellyne Geurts · CC0Olive-backed pocket mouse emerging from a burrow in loose soilPhoto: Ellyne Geurts · CC0Olive-backed Pocket Mouse (Perognathus fasciatus)

Olive-backed Pocket Mouse in Utah, by the numbers

Rare in Utah 103rd most recorded of 141 mammals logged in Utah

31 occurrence records

Records from 2000–2026.

When to look for the Olive-backed Pocket Mouse in Utah

Most sightings fall in June to July.

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

Monthly Utah records (table)
MonthRecords
January0
February0
March0
April0
May0
June17
July12
August1
September1
October0
November0
December0

Monthly olive-backed pocket mouse occurrence records (iNaturalist and GBIF) in Utah, 2000–2026.

Seasonality

Year-round in Utah, with recorded sightings peaking in June–July.

Occurrence map

Where Olive-backed Pocket Mouse has been recorded in Utah

31 records mapped · zoom and drag to explore

31 Utah records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Dinosaur National Monument 1
State Trust Lands Bonanza Block 1
Utah State Department of Wildlife Resources 159 1

Protected places with the most olive-backed 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 Utah

CountyRecords
Uintah County 23
Daggett County 8

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

Utah records are sparse; broad reference points include Great Salt Lake, Bear River Migratory Bird Refuge, Ouray National Wildlife Refuge.

Utah’s dry sagebrush and basin soil fit this mouse, not wet refuge centers.

Utah records are sparse; presence confirmed but timing of activity not well documented.

Occurrence data from GBIF.

Olive-backed pocket mouse in grass and dry litter at night
Full species profile Olive-backed Pocket Mouse Perognathus fasciatus Size 8 cm3.1 in Weight 11–14 g0.4–0.5 oz View the full profile

More mammals in Utah 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"