Oklahoma mammals

Northern Grasshopper Mouse in Oklahoma

Onychomys leucogaster

Native to Oklahoma SNR Unranked in Oklahoma

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

Northern Grasshopper Mouse in Oklahoma, by the numbers

Common in Oklahoma 29th most recorded of 120 mammals logged in Oklahoma

399 occurrence records
3 with iNaturalist photos
Dec 4, 2023 Last seen in Oklahoma

Records from 2000–2026.

399 total records count every Oklahoma occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 398 records with a full observation date.

When to look for the Northern Grasshopper Mouse in Oklahoma

Most sightings fall in September.

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

Monthly Oklahoma records (table)
MonthRecords
January9
February7
March3
April22
May76
June23
July52
August23
September121
October18
November37
December7

Monthly northern grasshopper mouse occurrence records (iNaturalist and GBIF) in Oklahoma, 2000–2026.

Seasonality

Year-round in Oklahoma, with recorded sightings peaking in September, with a smaller rise in May.

Occurrence map

Where Northern Grasshopper Mouse has been recorded in Oklahoma

300 records mapped · zoom and drag to explore

300 Oklahoma records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
CLO Lands 75
Little Sahara State Park 5
Black Mesa State Park & Nature Preserve 3
Evans Chambers Public Fishing Area 1
Copan Wildlife Management Area 1

Protected places with the most northern grasshopper 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 Oklahoma

CountyRecords
Beaver County 70
Cimarron County 68
Washita County 66
Woods County 28
Greer County 25
Woodward County 24
Tillman County 16
Harmon County 14
Jackson County 14
Grant County 10
Dewey County 9
Texas County 9
12 other counties 46

The complete county distribution, spread across 24 Oklahoma counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Oklahoma holds 399 records for the northern grasshopper mouse, mostly from the state’s drier western half.

A small predator of the shortgrass and sandhills

Unlike most mouse-sized rodents, this species hunts. It favors open, sparsely vegetated ground, shortgrass prairie, sagebrush flats, and sandy or gravelly patches where bare soil breaks up the cover, and Oklahoma’s western counties and Panhandle high plains supply exactly that structure. The mixed-grass and granite outcrop country around the Wichita Mountains offers the same kind of open hunting ground farther east, but records thin out fast moving into the forested Ozark and Ouachita country, where dense cover doesn’t suit a mouse that needs to see and chase prey across open ground.

Sharing turf with a reptile it sometimes eats

Grasshopper mice hunt insects, scorpions, and even other small rodents, and the diet extends to reptiles when the opportunity arises; documented prey includes the Texas horned lizard, an animal genuinely at home in the same dry, open country across western Oklahoma. Both species depend on loose, sun-baked ground and sparse plant cover, so a patch of western Oklahoma prairie that supports one is good habitat for the other, predator and occasional prey sharing the same sandy flats.

Status in Oklahoma

The species carries no state-specific NatureServe rank beyond an unranked designation, and it’s native to Oklahoma. USGS NAS doesn’t list it as introduced, consistent with a rodent that’s long held the western half of the state as part of its wider Great Plains range.

Occurrence data from iNaturalist and GBIF.

More mammals in Oklahoma 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"