New Jersey mammals

Southern Red-backed Vole in New Jersey

Clethrionomys gapperi

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.

Southern Red-backed Vole in New Jersey, by the numbers

Common in New Jersey 32nd most recorded of 94 mammals logged in New Jersey

54 occurrence records

Records from 2000–2026.

When to look for the Southern Red-backed Vole in New Jersey

Most sightings fall in March.

54 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
January1
February1
March18
April4
May7
June0
July2
August5
September8
October6
November0
December2

Monthly southern red-backed vole occurrence records (iNaturalist and GBIF) in New Jersey, 2000–2026.

Seasonality

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

Occurrence map

Where Southern Red-backed Vole has been recorded in New Jersey

54 records mapped · zoom and drag to explore

54 New Jersey records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Great Egg Harbor River Wildlife Management Area 3
Appalachian National Scenic Trail 1
Stokes State Forest 1
Wharton State Forest 1

Protected places with the most southern red-backed vole 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
Ocean County 16
Atlantic County 15
Burlington County 10
Camden County 6
Morris County 4
Sussex County 2
Cape May County 1

The complete county distribution, spread across 7 New Jersey counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

New Jersey’s 54 records for the southern red-backed vole don’t go where you might expect. The state’s northwestern highlands, the coolest, most heavily forested ground it has, show only a handful: Morris County with 4, Sussex with 2, and single records at Stokes State Forest and along the Appalachian Trail. Instead, the records pile up in the southern coastal plain. Ocean County leads with 16, Atlantic has 15, Burlington 10, and Camden 6, with Great Egg Harbor River Wildlife Management Area the busiest named site at 4.

Cool shade in the Pinelands

The pattern makes sense once you know the animal. This vole doesn’t need mountains; it needs a cool, moist forest floor, moss, leaf litter, and rotting logs. The Pine Barrens’ cedar swamps and shaded stream corridors deliver exactly that, and they hold it within a short drive of the most heavily trapped and surveyed ground in the state. Whether the coastal-plain lead reflects the voles or the surveyors is precisely what occurrence records can’t settle on their own.

A spring-heavy calendar, and a secure grade

Reports peak in March with 18 records, then scatter through the rest of the year, with a smaller September rise of 8. Winter quiet in the record is observer quiet, not vole quiet; this species stays active under snow. NatureServe ranks it S5 in New Jersey, secure, the strongest grade available, and it carries no separate state listing.

Occurrence data from GBIF.

More mammals in New Jersey in the atlas

Data & sources

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