Washington mammals

Western Meadow Vole in Washington

Microtus drummondii

Native to Washington S5 Secure in Washington

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

IUCN Red List status

NE – Not Evaluated

Not yet assessed against IUCN Red List criteria.

Western Meadow Vole in Washington, by the numbers

Rare in Washington 103rd most recorded of 145 mammals logged in Washington

18 occurrence records
18 with iNaturalist photos
Mar 5, 2026 Last seen in Washington

Records from 2000–2026.

When to look for the Western Meadow Vole in Washington

Most sightings fall in August.

18 Washington occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence. Based on a small number of dated records; the seasonal pattern may not be representative.

Monthly Washington records (table)
MonthRecords
January1
February3
March3
April1
May0
June1
July1
August4
September1
October1
November2
December0

Monthly western meadow vole occurrence records (iNaturalist and GBIF) in Washington, 2000–2026.

Seasonality

Year-round in Washington, with recorded sightings peaking in August, with a smaller rise in February–March.

Occurrence map

Where Western Meadow Vole has been recorded in Washington

18 records mapped · zoom and drag to explore

18 Washington records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Pasayten Wilderness 1

Protected places with the most western meadow 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 Washington

CountyRecords
Whitman County 5
Spokane County 4
Okanogan County 4
Klickitat County 1
Skagit County 1
Douglas County 1
Whatcom County 1
Stevens County 1

The complete county distribution, spread across 8 Washington counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Washington’s 18 western meadow vole records reach from Whitman and Spokane counties in the Palouse country through Okanogan and out to Skagit and Whatcom near the saltwater, a spread that suits a vole tied to wet ground wherever that ground occurs.

A vole that needs wet grass

Meadow voles live where grass and sedge grow thick and damp: marsh edges, wet meadows, stream banks, and irrigated pasture. They cut surface runways through the thatch, feeding on green shoots, sedges, and the occasional insect or seed, and they stay active day and night in every season rather than hibernating.

Breed fast, live short

A female can raise several litters from spring through fall, and few voles live past their first year, so local numbers can surge and crash within a single season. That boom and bust biology, more than any seasonal pattern, is what makes an encounter with this small brown vole hard to predict.

Status in Washington

NatureServe ranks the western meadow vole S5, Secure, in Washington, and the species is native to the state. USGS NAS does not list it as nonindigenous here.

Occurrence data from iNaturalist and GBIF.

More mammals in Washington 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"