Wisconsin mammals

Franklin's Ground Squirrel in Wisconsin

Poliocitellus franklinii

Native to Wisconsin S3 Vulnerable in Wisconsin

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

Franklin's Ground Squirrel in Wisconsin, by the numbers

Rare in Wisconsin 64th most recorded of 75 mammals logged in Wisconsin

39 occurrence records
3 with iNaturalist photos
Jun 13, 2026 Last seen in Wisconsin

Records from 2000–2026.

When to look for the Franklin's Ground Squirrel in Wisconsin

Most sightings fall in August.

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

Monthly Wisconsin records (table)
MonthRecords
January0
February0
March0
April0
May3
June8
July4
August17
September4
October2
November1
December0

Monthly franklin's ground squirrel occurrence records (iNaturalist and GBIF) in Wisconsin, 2000–2026.

Seasonality

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

Occurrence map

Where Franklin's Ground Squirrel has been recorded in Wisconsin

39 records mapped · zoom and drag to explore

39 Wisconsin records mapped

Where it's recorded in Wisconsin

CountyRecords
Dodge County 22
Dane County 7
Walworth County 4
Douglas County 2
Bayfield County 1
Washburn County 1
Washington County 1
Rock County 1

The complete county distribution, spread across 8 Wisconsin counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Wisconsin sits at the eastern edge of Franklin’s ground squirrel’s range, and its scattered records come from the Northwoods around Chequamegon-Nicolet National Forest, where grassy openings, bog margins, and lakeshore clearings break up the surrounding conifer and mixed forest. That’s a different setting from the species’ core Great Plains prairie, but it offers the same thing the squirrel actually needs: tall grass and brush next to soil deep enough for a burrow.

This is a shy, secretive ground squirrel that spends more time hidden in cover than out in the open, giving a birdlike whistle before it vanishes into the grass. Its deep burrows hold sleeping chambers and food stores that carry it through a long winter underground, and it surfaces only from roughly spring through late summer to breed, raise young, and rebuild the fat it burned overwinter.

All 38 Wisconsin records come from GBIF, concentrated between June and August when the squirrels are active above ground. The gap in records outside that window reflects months spent hibernating below ground, not an absence of animals.

Occurrence data from iNaturalist and GBIF.

More mammals in Wisconsin 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