Wyoming mammals

Northern Flying Squirrel in Wyoming

Glaucomys sabrinus

Native to Wyoming S3 Vulnerable in Wyoming

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

Northern Flying Squirrel in Wyoming, by the numbers

Rare in Wyoming 108th most recorded of 126 mammals logged in Wyoming

52 occurrence records
5 with iNaturalist photos
Oct 7, 2025 Last seen in Wyoming

Records from 2000–2026.

52 total records count every Wyoming occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 47; the monthly chart covers the 46 records with a full observation date.

When to look for the Northern Flying Squirrel in Wyoming

Most sightings fall in August to September.

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

Monthly Wyoming records (table)
MonthRecords
January0
February0
March0
April3
May1
June5
July8
August17
September11
October1
November0
December0

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

Seasonality

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

Occurrence map

Where Northern Flying Squirrel has been recorded in Wyoming

47 records mapped · zoom and drag to explore

47 Wyoming records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Grand Teton National Park 9
Shoshone National Forest 2
Teton National Forest 1
Yellowstone National Park 1
Bridger Wilderness 1
Absaroka-Beartooth Wilderness 1
Fitzpatrick Wilderness 1

Protected places with the most northern flying squirrel 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
Teton County 24
Park County 8
Fremont County 7
Lincoln County 4
Sublette County 2
Hot Springs County 1
Uinta County 1
Other localities 5

The complete county distribution, spread across 7 Wyoming counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Northern flying squirrels rarely turn up in Wyoming’s occurrence records, ranking among the state’s least-reported mammals with only about fifty confirmed sightings, mostly from Yellowstone, Grand Teton, and the surrounding Bridger-Teton forest. That scarcity says more about how hard the animal is to catch on camera than about how many actually live in these high conifer forests. It’s a nocturnal glider that sails between trees on a furred skin membrane and dens in cavities and old snags, so most people never see one even where it’s common.

Reported sightings cluster in August, when late-summer trail activity and warm nights likely put more observers in the right forest at the right time, not because the squirrels themselves are more active then. NatureServe rates the species vulnerable in Wyoming (S3), a step below its secure global status, reflecting how thin and scattered its high-elevation forest habitat is here.

Occurrence data from iNaturalist and GBIF.

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"