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 27th most recorded of 178 mammals logged in Oregon

844 occurrence records

Records from 2000–2026.

844 total records count every Oregon occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 841 records with a full observation date.

When to look for the North American Deermouse in Oregon

Most sightings fall in September.

841 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
January38
February21
March25
April31
May35
June135
July167
August67
September170
October96
November39
December17

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

Seasonality

Year-round in Oregon, with recorded sightings peaking in September, with a smaller rise in June–July.

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
Mt. Hood National Forest 6
McDonald-Dunn Research Forest 5
Mount Jefferson Wilderness 2
E.E. Wilson Wildlife Area 2
Phillip P. Schneider Wildlife Area 1
Lewis and Clark National Historical Park 1
Mill Creek Wilderness 1
Spring Valley Access Willamette River Greenway 1

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 183
Multnomah County 75
Crook County 67
Deschutes County 65
Baker County 49
Jackson County 41
Benton County 40
Curry County 37
Jefferson County 29
Washington County 28
Clackamas County 28
Clatsop County 27
21 other counties 175

The complete county distribution, spread across 33 Oregon counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Oregon’s 844 records, all from GBIF, occur in every month, climbing to a July high, dipping in August, and reaching a yearly peak in September before falling off in October. Lane County leads with 183, followed by Multnomah, Crook, and Deschutes, and the records span 33 counties from the coast to the high desert. 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"