Oregon mammals

North American Deermouse in Oregon

Peromyscus maniculatus

Native to Oregon S5 Secure in Oregon

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

Deer Mouse (Peromyscus maniculatus) (9310532204)DiGangi-DeermousePeromyscus maniculatusDeer mouse peering out from a lichen-covered tree crook beside a green leafDeer mouse braced on a bark-stripped log, ears forward and alert
Photo: Seney Natural History Association · CC BY-SA 2.0Deer Mouse (Peromyscus maniculatus) (9310532204)Photo: 6th Happiness · CC BY-SA 3.0DiGangi-DeermousePhoto: (Picture courtesy of the CDC and the Partnership, Inc.) · CC BY 2.5Peromyscus maniculatusPhoto: USFWS Mountain-Prairie · CC BY-SA 4.0Deer mouse peering out from a lichen-covered tree crook beside a green leafPhoto: Gregory "Slobirdr" Smith · CC BY-SA 2.0Deer mouse braced on a bark-stripped log, ears forward and alert

North American Deermouse in Oregon, by the numbers

Common in Oregon 2nd most recorded of 178 mammals logged in Oregon

5,768 occurrence records

Records from 2000–2026.

5,768 total records count every Oregon occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 5,735 records with a full observation date.

When to look for the North American Deermouse in Oregon

Most sightings fall in July to September.

5,735 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
January81
February114
March128
April178
May238
June636
July808
August1,337
September1,226
October437
November336
December216

Monthly north american deermouse occurrence records (iNaturalist and GBIF) in Oregon, 2000–2026.

Seasonality

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

Occurrence map

Where North American Deermouse has been recorded in Oregon

300 records mapped · zoom and drag to explore

300 Oregon records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Three Sisters Wilderness 108
Mt. Hood National Forest 84
Siuslaw National Forest 46
Oregon Islands National Wildlife Refuge Wilderness Area 46
Strawberry Mountain Wilderness 38
Umatilla National Forest 26
Steens Mountain Wilderness Area 25
Fern Ridge Wildlife Area 23

Protected places with the most north american deermouse 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
Lane County 1,308
Linn County 596
Douglas County 372
Harney County 321
Multnomah County 235
Coos County 189
Deschutes County 158
Benton County 157
Wallowa County 151
Malheur County 144
Curry County 138
Umatilla County 137
24 other counties 1,862

The complete county distribution, spread across 36 Oregon counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Oregon records occur in every month, rising to 158 in July and a yearly high of 177 in September before dropping to 98 in October. The overlay names Malheur and Klamath Marsh national wildlife refuges and the Willamette Valley refuges as places to look, and NatureServe ranks the species S5 (Secure) in the state. These are encounter patterns rather than an abundance census, so lower counts do not necessarily mean fewer mice.

Deer Mouse (Peromyscus maniculatus) (9310532204)
Full species profile North American Deermouse Peromyscus maniculatus Size 8–10 cm3.1–3.9 in Weight 21 g0.7 oz Lifespan Up to 8.3 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
  • 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"