Minnesota mammals

Tricolored Bat in Minnesota

Perimyotis subflavus

Native to Minnesota S3 Vulnerable in Minnesota

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

IUCN Red List status

  1. LC
  2. NT
  3. VU
  4. EN
  5. CR
  6. EW
  7. EX

VU – Vulnerable

High risk of extinction in the wild.

Tricolored Bat hibernating on a limestone mine wallTricolored Bat hanging from a cave ceiling with pale belly fur visibleTricolored Bat roosting in a shallow concrete creviceTricolored Bat tucked against a pale cave wallTricolored Bat roosting under a dark cave overhang
Photo: Krynak Tim, U.S. Fish and Wildlife Service · Public domainTricolored Bat hibernating on a limestone mine wallPhoto: Ann Froschauer/USFWS · CC-BYTricolored Bat hanging from a cave ceiling with pale belly fur visiblePhoto: aispinsects · CC-BYTricolored Bat roosting in a shallow concrete crevicePhoto: cigazze · CC-BYTricolored Bat tucked against a pale cave wallPhoto: Matt D'Agrosa · CC-BYTricolored Bat roosting under a dark cave overhang

Tricolored Bat in Minnesota, by the numbers

Occasional in Minnesota 59th most recorded of 88 mammals logged in Minnesota

13 occurrence records

Records from 2000–2026.

When to look for the Tricolored Bat in Minnesota

Most sightings fall in June.

13 Minnesota 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 Minnesota records (table)
MonthRecords
January1
February1
March2
April0
May1
June3
July1
August0
September0
October1
November1
December2

Monthly tricolored bat occurrence records (iNaturalist and GBIF) in Minnesota, 2000–2026.

Seasonality

Year-round in Minnesota, with recorded sightings peaking in June, with a smaller rise in December and March.

Occurrence map

Where Tricolored Bat has been recorded in Minnesota

13 records mapped · zoom and drag to explore

13 Minnesota records mapped

Where it's recorded in Minnesota

CountyRecords
Hennepin County 5
Dakota County 3
Ramsey County 2
Fillmore County 1
Lac qui Parle County 1
Wabasha County 1

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

Tricolored bat records in Minnesota are thin, just 14 iNaturalist and 13 GBIF entries, clustered around Agassiz, Tamarac, and Rice Lake national wildlife refuges in the northwest. It’s one of North America’s smallest bats, and its numbers have collapsed across much of its eastern range since white-nose syndrome arrived, a decline the IUCN’s global Vulnerable listing reflects.

The odd two-part peak, June and December, likely captures both summer roost activity and a mid-winter hibernation check rather than a single seasonal rhythm. NatureServe ranks the species S3, Vulnerable, in Minnesota, consistent with the sharp declines documented across the tricolored bat’s range.

Occurrence data from iNaturalist and GBIF.

Tricolored Bat hibernating on a limestone mine wall
Full species profile Tricolored Bat Perimyotis subflavus Size 7.7–8.9 cm3–3.5 in Weight 5–8 g0.2–0.3 oz Lifespan Up to 14.8 yr View the full profile

More mammals in Minnesota 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