Ohio mammals

American Ermine in Ohio

Mustela erminea

Native to Ohio

Not listed as nonindigenous in Ohio by USGS NAS; treated as native to its mapped Ohio 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.

American Ermine in Ohio, by the numbers

Occasional in Ohio 46th most recorded of 75 mammals logged in Ohio

29 occurrence records

Records from 2000–2026.

29 total records count every Ohio occurrence from GBIF and iNaturalist; the monthly chart covers the 28 records with a full observation date.

When to look for the American Ermine in Ohio

Most sightings fall in May to June.

28 Ohio 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 Ohio records (table)
MonthRecords
January3
February0
March0
April2
May5
June5
July2
August4
September2
October0
November2
December3

Monthly american ermine occurrence records (iNaturalist and GBIF) in Ohio, 2000–2026.

Seasonality

Year-round in Ohio, with recorded sightings peaking in May–June, with a smaller rise in August and December–January.

Occurrence map

Where American Ermine has been recorded in Ohio

29 records mapped · zoom and drag to explore

29 Ohio records mapped

Where it's recorded in Ohio

CountyRecords
Ashtabula County 8
Trumbull County 3
Summit County 2
Portage County 1
Wayne County 1
Erie County 1
Delaware County 1
Lorain County 1
Knox County 1
Medina County 1
Cuyahoga County 1
Allen County 1
7 other counties 7

The complete county distribution, spread across 19 Ohio counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Also called the short-tailed weasel, this species swaps its brown summer coat for pure white fur in winter, the true “ermine” pelt long prized in fur trade. Ohio’s 29 records lean toward late spring, with May and June ahead of the rest of the year, likely tracking when kits are being raised and adults are moving more to hunt for a growing family.

Ohio hasn’t assigned the species a settled NatureServe rank, which is a data gap rather than a sign it’s secure or missing. A fast, tenacious hunter of mice and voles, it can take prey several times its own weight, and its low record count probably owes as much to how secretive and fast-moving it is as to true scarcity.

Occurrence data from iNaturalist and GBIF.

More mammals in Ohio 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
  • IUCN Red Listattributed factthe global conservation status
  • USGS NASpublic domainnative / introduced status
  • Natural Earthpublic domainthe relief basemap
  • USFSpublic domainnational-forest boundaries