New Hampshire mammals

Masked Shrew in New Hampshire

Sorex cinereus

Native to New Hampshire S5 Secure in New Hampshire

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

Masked Shrew in New Hampshire, by the numbers

Common in New Hampshire 4th most recorded of 76 mammals logged in New Hampshire

2,198 occurrence records
14 with iNaturalist photos
Sep 30, 2025 Last seen in New Hampshire

Records from 2000–2026.

2,198 total records count every New Hampshire occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300.

When to look for the Masked Shrew in New Hampshire

Most sightings fall in July to August.

2,198 New Hampshire occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly New Hampshire records (table)
MonthRecords
January1
February1
March2
April0
May3
June344
July763
August779
September289
October5
November5
December6

Monthly masked shrew occurrence records (iNaturalist and GBIF) in New Hampshire, 2000–2026.

Seasonality

Year-round in New Hampshire, with recorded sightings peaking in July–August.

Occurrence map

Where Masked Shrew has been recorded in New Hampshire

300 records mapped · zoom and drag to explore

300 New Hampshire records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Appalachian National Scenic Trail 4
White Mountain National Forest 4
Souhegan Watershed Site #14 1
Franconia Notch State Park 1

Protected places with the most masked shrew 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 Hampshire

CountyRecords
Carroll County 2,123
Coos County 45
Grafton County 10
Strafford County 9
Hillsborough County 4
Rockingham County 3
Merrimack County 3
Cheshire County 1

The complete county distribution, spread across 8 New Hampshire counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Cinereus shrews live beneath leaf litter, logs, and moss in New Hampshire’s moist woods, from the Connecticut River valley to the Lakes Region and northern forests. Their tiny size and largely hidden life make purposeful viewing difficult; most records come from mammal surveys or chance encounters. Damp forest floors in lake state parks and wildlife management areas provide suitable habitat.

They remain active year-round beneath the ground layer and snow. Reports are concentrated from June through September, when field surveys and above-ground movement make these shrews easier to detect.

Occurrence data from iNaturalist and GBIF.

More mammals in New Hampshire 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
  • NatureServe ExplorerCC-BYthe state conservation rank
  • 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"