Minnesota mammals

Southern Red-backed Vole in Minnesota

Clethrionomys gapperi

Native to Minnesota SNR Unranked in Minnesota

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

Southern Red-backed Vole in Minnesota, by the numbers

Common in Minnesota 30th most recorded of 88 mammals logged in Minnesota

1,106 occurrence records

1,106 total records count every Minnesota occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 1,077 records with a full observation date.

When to look for the Southern Red-backed Vole in Minnesota

Most sightings fall in July to August.

1,077 Minnesota occurrence records (iNaturalist and GBIF) by month of year. Shows when the species is recorded, not a guarantee of presence.

Monthly Minnesota records (table)
MonthRecords
January18
February18
March28
April47
May52
June85
July247
August234
September133
October164
November26
December25

Monthly southern red-backed vole occurrence records (iNaturalist and GBIF) in Minnesota.

Seasonality

Year-round in Minnesota, with recorded sightings peaking in July–August, with a smaller rise in October.

Occurrence map

Where Southern Red-backed Vole has been recorded in Minnesota

300 records mapped · zoom and drag to explore

300 Minnesota records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Boundary Waters Canoe Area Wilderness 61
Chippewa National Forest 24
Superior National Forest 23
Miscellaneous 4
Mississippi River Islands State Scientific and Natural Area 3
Carlos Avery State Wildlife Management Area 3
Bluestem Prairie State Scientific and Natural Area 2
Santee Prairie State Scientific and Natural Area 2

Protected places with the most southern red-backed 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 Minnesota

CountyRecords
Cass County 143
St. Louis County 110
Cook County 108
Sherburne County 95
Lake County 91
Clearwater County 67
Carlton County 55
Brown County 36
Anoka County 30
Washington County 30
Isanti County 26
Otter Tail County 25
39 other counties 290

The complete county distribution, spread across 51 Minnesota counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Minnesota’s occurrence databases hold 1,106 records for the southern red-backed vole, all of them logged through GBIF rather than iNaturalist, which fits an animal that’s rarely photographed and mostly turns up in small-mammal trapping surveys. Reports concentrate around Voyageurs National Park and Superior National Forest.

A fungus-eating engine of the northern forest

This vole favors cool, moist conifer and mixed forest with plenty of downed logs and a thick duff layer, exactly the understory that covers much of the Arrowhead’s Superior National Forest and the country around Voyageurs National Park. A large share of its diet is fungi, including the underground truffle-like fungi that attach to conifer roots, and by digging up and eating those fungi the vole spreads their spores through the forest floor, helping the same conifers it lives under form the root partnerships they need to grow.

A record pattern shaped by traps, not tracks

Records rise sharply from July through October and stay low the rest of the year, which lines up less with when the vole is active, it’s active year-round under snow and duff alike, and more with when small-mammal trapping surveys run. A live-trap grid set in late summer will catch far more red-backed voles than a hiker will ever spot in the open.

Status in Minnesota

NatureServe hasn’t assigned Minnesota’s red-backed vole a numeric rank, but it’s native to the state. Its future here tracks the health of the mature, moist conifer forest of the Arrowhead, the same forest that depends on the fungi this small vole helps spread.

Occurrence data from iNaturalist.

More mammals in Minnesota 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"