Montana mammals

Idaho pocket gopher in Montana

Thomomys idahoensis

Native to Montana SU Unrankable in Montana

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

Idaho pocket gopher in Montana, by the numbers

Occasional in Montana 70th most recorded of 122 mammals logged in Montana

38 occurrence records

Records from 2000–2026.

When to look for the Idaho pocket gopher in Montana

Most sightings fall in April.

38 Montana occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly Montana records (table)
MonthRecords
January0
February0
March0
April17
May9
June0
July7
August5
September0
October0
November0
December0

Monthly idaho pocket gopher occurrence records (iNaturalist and GBIF) in Montana, 2000–2026.

Seasonality

Year-round in Montana, with recorded sightings peaking in April.

Occurrence map

Where Idaho pocket gopher has been recorded in Montana

38 records mapped · zoom and drag to explore

38 Montana records mapped

Where it's recorded in Montana

CountyRecords
Ravalli County 34
Mineral County 2
Beaverhead County 2

The complete county distribution, spread across 3 Montana counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Montana sits at the eastern edge of the Idaho pocket gopher’s narrow range, which is centered on Idaho and reaches only into a sliver of neighboring Montana and Utah. That edge-of-range position shows in the numbers: just 38 GBIF records statewide, and none from iNaturalist, for a species that spends nearly its whole life underground and is usually detected by its fan-shaped soil mounds rather than by sight.

What data exists points to spring activity, with April supplying 17 of the 38 records, the single busiest month, though a count this small can shift a lot from year to year without meaning much about the animal’s real seasonal pattern. NatureServe rates the species Unrankable (SU) in Montana, meaning there isn’t enough survey data to assign a real conservation status here, not that the gopher is doing poorly. Places like Red Rock Lakes National Wildlife Refuge and the Missouri River corridor offer the kind of diggable, vegetated valley soil this burrowing rodent needs, though confirmed Montana sightings remain few.

More mammals in Montana 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