Nebraska mammals

Northern Grasshopper Mouse in Nebraska

Onychomys leucogaster

Native to Nebraska S5 Secure in Nebraska

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

Occasional in Nebraska 58th most recorded of 95 mammals logged in Nebraska

14 occurrence records
3 with iNaturalist photos
Sep 6, 2024 Last seen in Nebraska

Records from 2000–2026.

When to look for the Northern Grasshopper Mouse in Nebraska

Most sightings fall in June.

14 Nebraska occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence. Based on a small number of dated records; the seasonal pattern may not be representative.

Monthly Nebraska records (table)
MonthRecords
January0
February0
March0
April0
May0
June10
July1
August1
September1
October1
November0
December0

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

Seasonality

Year-round in Nebraska, with recorded sightings peaking in June.

Occurrence map

Where Northern Grasshopper Mouse has been recorded in Nebraska

14 records mapped · zoom and drag to explore

14 Nebraska records mapped

Where it's recorded in Nebraska

CountyRecords
Garden County 4
Cherry County 2
Pierce County 2
Scotts Bluff County 2
Pawnee County 1
Arthur County 1
Brown County 1
Hall County 1

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

Northern grasshopper mice, unusual among rodents for being largely carnivorous, hunting insects and even other small mice, rack up 14 records in Nebraska, yet only 3 come from iNaturalist, an overwhelming GBIF trapping-survey signature rather than casual sightings of this genuinely widespread but rarely seen species. NatureServe rates the state population S5, secure.

June alone accounts for 10 of the year’s monthly-tallied records, more than a third of the total, a sharp spike that lines up far more closely with summer trapping-survey timing than with the mouse’s own year-round nocturnal activity.

Occurrence data from iNaturalist and GBIF.

More mammals in Nebraska 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