Vermont mammals

American Ermine in Vermont

Mustela erminea

Native to Vermont

Not listed as nonindigenous in Vermont by USGS NAS; treated as native to its mapped Vermont 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 Vermont, by the numbers

Occasional in Vermont 29th most recorded of 65 mammals logged in Vermont

107 occurrence records
107 with iNaturalist photos

Records from 2000–2026.

107 total records count every Vermont occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 104; the monthly chart covers the 104 records with a full observation date.

When to look for the American Ermine in Vermont

Most sightings fall in November to February.

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

Monthly Vermont records (table)
MonthRecords
January12
February11
March5
April11
May12
June8
July8
August4
September5
October7
November13
December8

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

Seasonality

Year-round in Vermont, with recorded sightings peaking in November–February, with a smaller rise in April–July.

Occurrence map

Where American Ermine has been recorded in Vermont

104 records mapped · zoom and drag to explore

104 Vermont records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Wenlock Wildlife Management Area 2
Jericho Research Forest 1
Groton State Forest 1
East Creek Wildlife Management Area 1
Green Mountain National Forest 1
Dead Creek Wildlife Management Area 1
Sandbar Wildlife Management Area 1

Protected places with the most american ermine 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 Vermont

CountyRecords
Washington County 19
Chittenden County 18
Windsor County 16
Addison County 14
Windham County 11
Rutland County 7
Orange County 4
Essex County 4
Lamoille County 4
Franklin County 3
Caledonia County 2
Orleans County 2
Other localities 3

The complete county distribution, spread across 12 Vermont counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

American ermines use stone walls, brushy field edges, wetland margins, and forest openings throughout Vermont. The Northeast Kingdom and Green Mountains provide extensive habitat, but a quick crossing or a line of paired tracks in fresh snow is more likely than a prolonged view.

They are active year-round, with report peaks in February and November. Vermont ermines typically turn white in winter except for the black tail tip, a useful distinction from other small weasels; never pursue one into cover.

Occurrence data from iNaturalist and GBIF.

American Ermine in other states

More mammals in Vermont 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
  • USGS Protected Areas Databasepublic domainthe named parks, forests, and refuges behind "notable places to look"