Wyoming mammals

Thirteen-lined ground squirrel in Wyoming

Ictidomys tridecemlineatus

Native to Wyoming S5 Secure 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.

Thirteen-lined ground squirrel crouched beside short grassThirteen-lined ground squirrel standing upright in prairie grassThirteen-lined ground squirrel rising from green lawn grassThirteen-lined ground squirrel peering from a burrow entranceThirteen-lined ground squirrel close portrait in dry grass
Photo: sofi v · CC-BYThirteen-lined ground squirrel crouched beside short grassPhoto: carterdorscht · CC0Thirteen-lined ground squirrel standing upright in prairie grassPhoto: Lauren McLaurin · CC-BYThirteen-lined ground squirrel rising from green lawn grassPhoto: Millie Basden · CC-BYThirteen-lined ground squirrel peering from a burrow entrancePhoto: Sean Frey · CC-BYThirteen-lined ground squirrel close portrait in dry grass

Thirteen-lined ground squirrel in Wyoming, by the numbers

Occasional in Wyoming 55th most recorded of 126 mammals logged in Wyoming

61 occurrence records
58 with iNaturalist photos
May 8, 2026 Last seen in Wyoming

Records from 2000–2026.

61 total records count every Wyoming occurrence from GBIF and iNaturalist; the monthly chart covers the 60 records with a full observation date.

When to look for the Thirteen-lined ground squirrel in Wyoming

Most sightings fall in June to July.

60 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
March1
April6
May6
June14
July20
August7
September5
October1
November0
December0

Monthly thirteen-lined ground squirrel occurrence records (iNaturalist and GBIF) in Wyoming, 2000–2026.

Seasonality

Year-round in Wyoming, with recorded sightings peaking in June–July.

Occurrence map

Where Thirteen-lined ground squirrel has been recorded in Wyoming

61 records mapped · zoom and drag to explore

61 Wyoming records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Devils Tower National Monument 2
State Lands 1111112898 1
Jacoby Golf Course 1

Protected places with the most thirteen-lined ground 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
Albany County 24
Laramie County 7
Sweetwater County 6
Sheridan County 5
Natrona County 5
Converse County 3
Crook County 3
Carbon County 2
Sublette County 2
Niobrara County 1
Johnson County 1
Platte County 1
Uinta County 1

The complete county distribution, spread across 13 Wyoming counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Thirteen-lined ground squirrel records in Wyoming concentrate around Devils Tower National Monument and Medicine Bow National Forest’s open grassland edges, the short-grass prairie and pasture habitat this ground squirrel favors over forest or dense shrub.

Reports build through spring and peak at 20 in July before dropping off through fall, tracking this ground squirrel’s active season above ground before it retreats underground for winter hibernation. NatureServe ranks the species S5, Secure, statewide.

Occurrence data from iNaturalist and GBIF.

Thirteen-lined ground squirrel crouched beside short grass
Full species profile Thirteen-lined ground squirrel Ictidomys tridecemlineatus Size 17–30 cm6.7–11.8 in Weight 173 g6.1 oz Lifespan Up to 7.9 yr 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"