New Mexico mammals

Yellow-nosed Cotton Rat in New Mexico

Sigmodon ochrognathus

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.

Yellow-nosed Cotton Rat in New Mexico, by the numbers

Occasional in New Mexico 103rd most recorded of 176 mammals logged in New Mexico

73 occurrence records

Records from 2000–2026.

When to look for the Yellow-nosed Cotton Rat in New Mexico

Most sightings fall in October to November.

73 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
January9
February3
March4
April8
May3
June9
July4
August0
September4
October13
November14
December2

Monthly yellow-nosed cotton rat occurrence records (iNaturalist and GBIF) in New Mexico, 2000–2026.

Seasonality

Year-round in New Mexico, with recorded sightings peaking in October–November, with a smaller rise in January and June.

Occurrence map

Where Yellow-nosed Cotton Rat has been recorded in New Mexico

73 records mapped · zoom and drag to explore

73 New Mexico records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
State Trust Land 2

Protected places with the most yellow-nosed cotton rat 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
Hidalgo County 45
Catron County 16
Grant County 10
Eddy County 2

The complete county distribution, spread across 4 New Mexico counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Records of the yellow-nosed cotton rat in New Mexico sit almost entirely at the southern edge of the state, near White Sands National Park, Organ Mountains-Desert Peaks National Monument, and Carlsbad Caverns National Park. That clustering fits a species whose US range barely crosses the border from Mexico into the desert grasslands of the Southwest.

The 73 known records are thin and spread unevenly through the year, with modest upticks in January and again in October and November, but no month holds a strong majority of sightings. NatureServe ranks the species S2, Imperiled, in New Mexico, a sharper conservation concern than its globally secure IUCN status suggests. None of the state’s records come from iNaturalist; every one is a GBIF specimen entry, so this is a rat New Mexico knows mostly from trapping surveys, not photographs.

Occurrence data from 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"