New Jersey mammals

Long-tailed Weasel in New Jersey

Neogale frenata

Native to New Jersey S5 Secure in New Jersey

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

Long-tailed Weasel in New Jersey, by the numbers

Occasional in New Jersey 36th most recorded of 94 mammals logged in New Jersey

25 occurrence records
25 with iNaturalist photos
Oct 22, 2025 Last seen in New Jersey

Records from 2000–2026.

25 total records count every New Jersey occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 24; the monthly chart covers the 24 records with a full observation date.

When to look for the Long-tailed Weasel in New Jersey

Most sightings fall in May.

24 New Jersey 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 New Jersey records (table)
MonthRecords
January0
February0
March1
April2
May6
June3
July3
August3
September2
October3
November0
December1

Monthly long-tailed weasel occurrence records (iNaturalist and GBIF) in New Jersey, 2000–2026.

Seasonality

Year-round in New Jersey, with recorded sightings peaking in May.

Occurrence map

Where Long-tailed Weasel has been recorded in New Jersey

24 records mapped · zoom and drag to explore

24 New Jersey records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Sparta Mountain Wildlife Management Area 4
Brendan T. Byrne State Forest 1
Double Trouble State Park 1
Kittatinny Valley State Park 1
Heislerville Wildlife Management Area 1
Stokes State Forest 1

Protected places with the most long-tailed weasel 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 New Jersey

CountyRecords
Morris County 7
Sussex County 6
Somerset County 4
Mercer County 2
Burlington County 1
Atlantic County 1
Ocean County 1
Cumberland County 1
Passaic County 1
Other localities 1

The complete county distribution, spread across 9 New Jersey counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Long-tailed weasels carry a healthy NatureServe rating in New Jersey, S5 secure, though the state’s record here rests entirely on 22 iNaturalist sightings with no GBIF specimen data logged, unusual for a weasel species that in many states leans heavily on trapping records instead. That imbalance suggests New Jersey’s documented sightings come mostly from people encountering the animal directly rather than survey or fur-industry data.

Brendan T. Byrne State Forest and Great Swamp National Wildlife Refuge each account for a single recorded sighting, a reminder that with a record this thin, spread across the state’s Pinelands and Highlands regions, no single site stands out as a genuine concentration point for this elusive predator.

Occurrence data from iNaturalist and GBIF.

Long-tailed Weasel in other states

More mammals in New Jersey in the atlas

Data & sources

The data and visualizations on this page draw on these open sources: