North Dakota mammals

Thirteen-lined ground squirrel in North Dakota

Ictidomys tridecemlineatus

Native to North Dakota SNR Unranked in North Dakota

Not listed as nonindigenous in North Dakota by USGS NAS; native to its North Dakota 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 in North Dakota, by the numbers

Common in North Dakota 6th most recorded of 92 mammals logged in North Dakota

1,128 occurrence records
273 with iNaturalist photos
Jul 8, 2026 Last seen in North Dakota

Records from 2000–2026.

1,128 total records count every North Dakota occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 1,095 records with a full observation date.

When to look for the Thirteen-lined ground squirrel in North Dakota

Most sightings fall in June to August.

1,095 North Dakota occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly North Dakota records (table)
MonthRecords
January1
February0
March2
April32
May158
June346
July243
August234
September62
October16
November0
December1

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

Seasonality

Year-round in North Dakota, with recorded sightings peaking in June–August.

Occurrence map

Where Thirteen-lined ground squirrel has been recorded in North Dakota

300 records mapped · zoom and drag to explore

300 North Dakota records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Nd State Lands - Surface Ownership 146
Turtle River State Park 11
Fort Ransom State Park 7
Knife River Indian Villages National Historic Site 6
Icelandic State Park 4
Morton County 4
Fort Stevenson State Park 3
Riverdale 2

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 North Dakota

CountyRecords
Stutsman County 544
Morton County 170
Burleigh County 39
Kidder County 34
Cass County 28
McHenry County 28
Richland County 27
McLean County 27
Ward County 24
Mercer County 19
Grand Forks County 17
Stark County 14
30 other counties 157

The complete county distribution, spread across 42 North Dakota counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Thirteen-lined ground squirrels favor short, well-drained grass in prairies, roadsides, cemeteries, pastures, and mowed parkland across North Dakota. Watch for a small striped animal sitting upright beside a burrow or dashing across a quiet road; Sheyenne National Grassland provides extensive native-grass habitat, but local green spaces can be equally productive.

The species is common in the record set, yet it is not truly observable year-round: it spends the cold months underground in hibernation. Reports peak from June through August, when adults and newly emerged young are active above ground.

Occurrence data from iNaturalist and GBIF.

More mammals in North Dakota 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"