Oregon mammals

Long-tailed Vole in Oregon

Microtus longicaudus

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.

Long-tailed Vole in Oregon, by the numbers

Occasional in Oregon 104th most recorded of 178 mammals logged in Oregon

501 occurrence records
3 with iNaturalist photos
Jun 24, 2024 Last seen in Oregon

Records from 2000–2026.

501 total records count every Oregon occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 500 records with a full observation date.

When to look for the Long-tailed Vole in Oregon

Most sightings fall in July to August.

500 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
January5
February7
March6
April10
May24
June68
July141
August89
September69
October62
November16
December3

Monthly long-tailed vole occurrence records (iNaturalist and GBIF) in Oregon, 2000–2026.

Seasonality

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

Occurrence map

Where Long-tailed Vole 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
Eagle Cap Wilderness 10
Mt. Hood National Forest 8
Crater Lake National Park 4
Siuslaw National Forest 3
North Fork Umatilla Wilderness 3
Crooked River National Grassland 2
Umatilla National Forest 1
Rock Creek Wilderness 1

Protected places with the most long-tailed vole 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
Douglas County 53
Curry County 45
Lake County 45
Tillamook County 42
Harney County 34
Grant County 32
Wallowa County 31
Jackson County 30
Union County 20
Klamath County 20
Deschutes County 17
Wheeler County 15
15 other counties 117

The complete county distribution, spread across 27 Oregon counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Long-tailed voles carry a longer tail than most of Oregon’s other vole species, a useful field mark that separates them from the more common meadow and montane voles sharing the same coastal grass and shrub habitat near Oregon Dunes National Recreation Area.

Nearly all of Oregon’s 499 records come from GBIF specimen data, with just 3 iNaturalist photographs, and the record shows an unusually sharp signature: a single July spike accounts for the great majority of sightings, with every other month at or near zero. That pattern most likely traces back to one concentrated trapping survey rather than a genuine seasonal pulse in vole activity. NatureServe ranks the species S5, secure, in Oregon.

Occurrence data from iNaturalist and GBIF.

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"