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 39th most recorded of 94 mammals logged in New Jersey

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

Records from 2000–2026.

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

Most sightings fall in May to June.

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

Monthly New Jersey records (table)
MonthRecords
January4
February0
March2
April2
May6
June5
July3
August2
September3
October4
November0
December2

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–June, with a smaller rise in October and January.

Occurrence map

Where Long-tailed Weasel has been recorded in New Jersey

33 records mapped · zoom and drag to explore

33 New Jersey records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Sparta Mountain Wildlife Management Area 4
Kittatinny Valley State Park 1
Brendan T. Byrne State Forest 1
Heislerville Wildlife Management Area 1
Double Trouble State Park 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
Mercer County 8
Morris County 7
Sussex County 5
Somerset County 4
Cumberland County 3
Ocean County 2
Cape May County 1
Burlington County 1
Atlantic County 1
Passaic County 1

The complete county distribution, spread across 10 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.

More mammals in New Jersey in the atlas

Data & sources

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