Nevada mammals

Long-tailed Pocket Mouse in Nevada

Chaetodipus formosus

Native to Nevada S5 Secure in Nevada

Not listed as nonindigenous in Nevada by USGS NAS; native to its Nevada 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 Pocket Mouse in Nevada, by the numbers

Common in Nevada 19th most recorded of 142 mammals logged in Nevada

476 occurrence records
13 with iNaturalist photos
Feb 11, 2026 Last seen in Nevada

Records from 2000–2026.

476 total records count every Nevada occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 475 records with a full observation date.

When to look for the Long-tailed Pocket Mouse in Nevada

Most sightings fall in May to June.

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

Monthly Nevada records (table)
MonthRecords
January0
February2
March93
April53
May101
June110
July13
August7
September40
October50
November6
December0

Monthly long-tailed pocket mouse occurrence records (iNaturalist and GBIF) in Nevada, 2000–2026.

Seasonality

Year-round in Nevada, with recorded sightings peaking in May–June, with a smaller rise in March.

Occurrence map

Where Long-tailed Pocket Mouse has been recorded in Nevada

300 records mapped · zoom and drag to explore

300 Nevada records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Death Valley National Park 14
Gold Butte National Monument 3
Wayne E. Kirch Wildlife Management Area 2
Big Rocks Wilderness Area 1

Protected places with the most long-tailed pocket mouse 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 Nevada

CountyRecords
Nye County 147
Clark County 125
Mineral County 85
Lincoln County 80
Pershing County 15
Washoe County 9
Esmeralda County 6
Churchill County 5
Elko County 2
Humboldt County 1
Other localities 1

The complete county distribution, spread across 10 Nevada counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Nevada records for the long-tailed pocket mouse have a limited set of named hotspots, led by Death Valley National Park with 14. That gap may reflect where people look and report, so it doesn’t prove absence elsewhere.

These sites place the Nevada record pattern firmly in the state’s southern desert country. The protected lands also span springs, canyons, and open basin terrain. The strongest reporting runs from March through June, then drops sharply in July and August before a smaller rise in September and October. Those months show when records were made, not when the mice are most numerous.

The file combines 13 research-grade iNaturalist records and 467 GBIF records; with the overlap between them removed, that’s 476 distinct records, which measure documented encounters, not Nevada’s population size. It’s native to Nevada. Nevada doesn’t specifically list it under the state’s conservation framework, and the IUCN lists it as Least Concern.

Occurrence data from iNaturalist and GBIF.

More mammals in Nevada 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"