Oregon mammals

Douglas's Squirrel in Oregon

Tamiasciurus douglasii

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.

Douglas's Squirrel in Oregon, by the numbers

Common in Oregon 7th most recorded of 178 mammals logged in Oregon

3,687 occurrence records
2,990 with iNaturalist photos
Jul 8, 2026 Last seen in Oregon

Records from 2000–2026.

3,687 total records count every Oregon occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 3,679 records with a full observation date.

When to look for the Douglas's Squirrel in Oregon

Most sightings fall in May to October.

3,679 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
January148
February154
March233
April231
May372
June455
July429
August482
September488
October337
November214
December136

Monthly douglas's squirrel occurrence records (iNaturalist and GBIF) in Oregon, 2000–2026.

Seasonality

Year-round in Oregon, with recorded sightings peaking in May–October.

Occurrence map

Where Douglas's Squirrel 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
Deschutes National Forest 77
Lewis and Clark National Historical Park 58
Siuslaw National Forest 44
McDonald-Dunn Research Forest 38
Crater Lake National Park 19
Mount Hood Wilderness 18
Newberry National Volcanic Monument 17
Cascade-Siskiyou National Monument 16

Protected places with the most douglas's squirrel 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
Multnomah County 408
Deschutes County 392
Tillamook County 339
Clatsop County 291
Clackamas County 267
Washington County 250
Benton County 221
Lane County 220
Lincoln County 172
Coos County 141
Douglas County 126
Grant County 117
19 other counties 743

The complete county distribution, spread across 31 Oregon counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

With 3,687 records, Douglas’s squirrel ranks among the most documented mammals in Oregon, and its map is a map of conifer forest. Multnomah, Deschutes, Tillamook, and Clatsop counties lead, spanning the Cascades, the Coast Range, and the wet forest in between.

The forest’s resident scold

This small squirrel with the rusty orange underside lives on conifer seed, cutting green cones from the canopy and peeling them at favorite feeding stumps that grow into piles of scales called middens. It defends those larders loudly, and its sharp, rolling chatter is often a hiker’s first clue that the squirrel is near. Oregon’s records pile up in exactly that country: Deschutes and Siuslaw national forests lead among named places, with Crater Lake National Park, Newberry National Volcanic Monument, and Mount Hood Wilderness close behind.

A harvest that never fully stops

Douglas’s squirrels do not hibernate, though winter storms keep them treed up and out of sight. Cone cutting peaks in late summer, when the animals work frantically to cache cones in damp middens that keep the scales closed and the seed fresh, and Oregon’s record follows the same arc, high from June through a September crest before sliding back through the wet winter.

Status in Oregon

NatureServe ranks Douglas’s squirrel S5, Secure, in Oregon, and the species is native to the state’s conifer forests. USGS NAS does not list it as nonindigenous here.

Occurrence data from iNaturalist and GBIF.

Douglas's Squirrel in other states

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"