Wyoming mammals

Northern Montane Shrew in Wyoming

Sorex obscurus

Native to Wyoming SNR Unranked in Wyoming

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

IUCN Red List status

NE – Not Evaluated

Not yet assessed against IUCN Red List criteria.

Live northern montane shrew standing alert on sunlit sphagnum moss with dry grass stems around itAI-generated image: Northern montane shrew foraging in meadow grass and moss. No additional license-safe photograph of this species exists. This image was generated with AI from verified reference material and reviewed by our editorial team for accuracyAI-generated image: Northern montane shrew paused in damp leaf litter. No additional license-safe photograph of this species exists. This image was generated with AI from verified reference material and reviewed by our editorial team for accuracy
Photo: Aandroski · CC BY-SA 4.0Live northern montane shrew standing alert on sunlit sphagnum moss with dry grass stems around itAI-generated image No additional license-safe photograph of this species exists. This image was generated with AI from verified reference material and reviewed by our editorial team for accuracyNorthern montane shrew foraging in meadow grass and mossAI-generated image No additional license-safe photograph of this species exists. This image was generated with AI from verified reference material and reviewed by our editorial team for accuracyNorthern montane shrew paused in damp leaf litter

Northern Montane Shrew in Wyoming, by the numbers

Rare in Wyoming 87th most recorded of 126 mammals logged in Wyoming

14 occurrence records

Records from 2000–2026.

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

When to look for the Northern Montane Shrew in Wyoming

Most sightings fall in August.

13 Wyoming 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 Wyoming records (table)
MonthRecords
January1
February0
March0
April0
May0
June1
July1
August7
September3
October0
November0
December0

Monthly northern montane shrew occurrence records (iNaturalist and GBIF) in Wyoming, 2000–2026.

Seasonality

Year-round in Wyoming, with recorded sightings peaking in August.

Occurrence map

Where Northern Montane Shrew has been recorded in Wyoming

14 records mapped · zoom and drag to explore

14 Wyoming records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Yellowstone National Park 2
Popo Agie Wilderness 1

Protected places with the most northern montane shrew 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 Wyoming

CountyRecords
Sheridan County 4
Big Horn County 3
Fremont County 3
Park County 2
Johnson County 1
Sublette County 1

The complete county distribution, spread across 6 Wyoming counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Wyoming’s overlay contains just 14 GBIF records and no iNaturalist records; seven fall in August and three in September, with single reports in January, June, and July. Yellowstone National Park, the Red Desert, and Bighorn National Forest are the highlighted search areas, while the state rank is SNR (Unranked). This sparse month pattern documents reporting, not abundance or a complete seasonal distribution.

Live northern montane shrew standing alert on sunlit sphagnum moss with dry grass stems around it
Full species profile Northern Montane Shrew Sorex obscurus Size 7.6 cm3 in Weight 7 g0.2 oz View the full profile

More mammals in Wyoming 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"