Montana mammals

Black-footed Ferret in Montana

Mustela nigripes

Native to Montana S1 Critically Imperiled 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

EN – Endangered

Very high risk of extinction in the wild.

Black-footed Ferret in Montana, by the numbers

Rare in Montana 103rd most recorded of 122 mammals logged in Montana

13 occurrence records

Records from 2000–2026.

13 total records count every Montana occurrence from GBIF and iNaturalist; the monthly chart covers the 8 records with a full observation date.

When to look for the Black-footed Ferret in Montana

Most sightings fall in April.

8 Montana 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 Montana records (table)
MonthRecords
January0
February0
March1
April2
May0
June1
July0
August1
September2
October1
November0
December0

Monthly black-footed ferret occurrence records (iNaturalist and GBIF) in Montana, 2000–2026.

Seasonality

Sparse observation record in Montana; presence confirmed but timing of activity not well documented.

Occurrence map

Where Black-footed Ferret has been recorded in Montana

13 records mapped · zoom and drag to explore

13 Montana records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Ul Bend National Wildlife Refuge_Wilderness Area 1

Protected places with the most black-footed ferret 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 Montana

CountyRecords
Garfield County 5
Phillips County 3
Carter County 3
Blaine County 1
Rosebud County 1

The complete county distribution, spread across 5 Montana counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Montana’s occurrence databases hold just 13 records of the black-footed ferret, one of the thinnest counts in this batch of overlays. That scarcity isn’t only a detection problem; ferrets are genuinely rare on the ground here, restricted to a handful of prairie dog colonies rather than spread across the state.

Tied to one prairie dog colony along the Missouri

Montana’s ferrets exist because of a specific reintroduction, not a natural rebound. Biologists began releasing captive-bred ferrets onto black-tailed prairie dog colonies along the Missouri River, in and around the UL Bend and Charles M. Russell National Wildlife Refuge country, starting in the 1990s. Nearly every Montana record traces back to that colony and its neighbors, not to any wider recovery across the state’s prairie. Without an active, disease-free prairie dog town underneath it, a ferret can’t survive here at all.

Records this sparse still mean something

A dozen-plus records spread thin across more than two decades doesn’t suggest an animal spreading through Montana. It reflects how hard a nocturnal, burrow-dwelling hunter is to find even where wildlife agencies know exactly which colony to check. Sylvatic plague can erase one of these small colonies within weeks, which is part of why the ferret’s Montana foothold has stayed this narrow for so long.

Status in Montana

The ferret is native to Montana and globally listed as Endangered by the IUCN. NatureServe ranks it S1, critically imperiled. Its survival here depends entirely on keeping the prairie dog colonies along the Missouri River both large and free of plague.

Occurrence data from iNaturalist and GBIF.

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
  • USGS Protected Areas Databasepublic domainthe named parks, forests, and refuges behind "notable places to look"