New Mexico mammals

Masked Shrew in New Mexico

Sorex cinereus

Native to New Mexico S2 Imperiled in New Mexico

Not listed as nonindigenous in New Mexico by USGS NAS; native to its New Mexico 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 Mexico, by the numbers

Common in New Mexico 51st most recorded of 176 mammals logged in New Mexico

321 occurrence records

Records from 2000–2026.

321 total records count every New Mexico occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 318 records with a full observation date.

When to look for the Masked Shrew in New Mexico

Most sightings fall in August to September.

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

Monthly New Mexico records (table)
MonthRecords
January1
February0
March0
April0
May6
June15
July29
August83
September138
October45
November0
December1

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

Seasonality

Year-round in New Mexico, with recorded sightings peaking in August–September.

Occurrence map

Where Masked Shrew has been recorded in New Mexico

300 records mapped · zoom and drag to explore

300 New Mexico records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Pecos Wilderness 62
San Pedro Parks Wilderness 11
Carson Other 11
Valles Caldera National Preserve 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 Mexico

CountyRecords
San Miguel County 186
Taos County 61
Rio Arriba County 34
Sandoval County 18
Santa Fe County 14
Colfax County 3
Mora County 3
Other localities 2

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

A cinereus shrew’s non-stop hunting keeps it buried in leaf litter and soil far more than in front of a camera, and New Mexico’s record shows it: every one of the state’s 321 logged sightings comes from a GBIF specimen survey, not a single iNaturalist photo.

NatureServe ranks the species S2, Imperiled, in New Mexico, a sharper concern than its globally secure status elsewhere suggests. The state sits near the southern edge of a shrew whose main range runs from Alaska through the northern Rockies, and edge populations like this one tend to be thinner and harder to find.

Records cluster around Kiowa National Grassland, Capulin Volcano National Monument, and Bitter Lake National Wildlife Refuge, with reports rising sharply from August through October, most likely reflecting when trapping surveys run rather than a true seasonal peak.

Occurrence data from iNaturalist and GBIF.

More mammals in New Mexico 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"