Oregon mammals

Southwestern Jumping Mouse in Oregon

Zapus princeps

Native to Oregon

Not listed as nonindigenous in Oregon by USGS NAS; treated as native to its mapped Oregon 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.

Live western jumping mouse crouched in leaf litter with its long tail curving behindAI-generated image: Southwestern jumping mouse crouched in streamside sedge. No additional license-safe photograph of this species exists. This image was generated with AI from verified reference material and reviewed by our editorial team for accuracyAI-generated image: Southwestern jumping mouse on a wet willow bank. No additional license-safe photograph of this species exists. This image was generated with AI from verified reference material and reviewed by our editorial team for accuracy
Photo: U.S. Forest Service · Public domainLive western jumping mouse crouched in leaf litter with its long tail curving behindAI-generated image No additional license-safe photograph of this species exists. This image was generated with AI from verified reference material and reviewed by our editorial team for accuracySouthwestern jumping mouse crouched in streamside sedgeAI-generated image No additional license-safe photograph of this species exists. This image was generated with AI from verified reference material and reviewed by our editorial team for accuracySouthwestern jumping mouse on a wet willow bank

Southwestern Jumping Mouse in Oregon, by the numbers

Occasional in Oregon 62nd most recorded of 178 mammals logged in Oregon

175 occurrence records

Records from 2000–2026.

175 total records count every Oregon occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 174; the monthly chart covers the 174 records with a full observation date.

When to look for the Southwestern Jumping Mouse in Oregon

Most sightings fall in July.

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

Monthly Oregon records (table)
MonthRecords
January0
February0
March0
April0
May8
June47
July111
August5
September2
October1
November0
December0

Monthly southwestern jumping mouse occurrence records (iNaturalist and GBIF) in Oregon, 2000–2026.

Seasonality

Year-round in Oregon, with recorded sightings peaking in July.

Occurrence map

Where Southwestern Jumping Mouse has been recorded in Oregon

174 records mapped · zoom and drag to explore

174 Oregon records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Eagle Cap Wilderness 11
North Fork Umatilla Wilderness 2

Protected places with the most southwestern jumping 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 Oregon

CountyRecords
Wallowa County 30
Grant County 27
Lake County 21
Wheeler County 20
Douglas County 19
Jackson County 12
Baker County 11
Umatilla County 8
Crook County 7
Linn County 5
Union County 4
Lincoln County 2
6 other counties 9

The complete county distribution, spread across 18 Oregon counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Thirteen of the 15 observations in Oregon’s monthly series fall in July, with one each in May and August. Malheur National Wildlife Refuge, Columbia Plateau public lands, and Wallowa Valley bunchgrass slopes are the places this overlay highlights. The sharp July concentration belongs to a small record set, not an abundance estimate or a complete statement of the mouse’s distribution.

Live western jumping mouse crouched in leaf litter with its long tail curving behind
Full species profile Southwestern Jumping Mouse Zapus princeps Size 22–25 cm8.7–9.8 in Weight 28 g1 oz Lifespan Up to 6 yr View the full profile

More mammals in Oregon 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
  • 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"