Texas mammals

Rio Grande Ground Squirrel in Texas

Ictidomys parvidens

Native to Texas S5 Secure in Texas

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

IUCN Red List status

NE – Not Evaluated

Not yet assessed against IUCN Red List criteria.

Rio Grande Ground Squirrel in Texas, by the numbers

Common in Texas 30th most recorded of 197 mammals logged in Texas

1,661 occurrence records
1,158 with iNaturalist photos
Jul 7, 2026 Last seen in Texas

1,661 total records count every Texas occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 1,651 records with a full observation date.

When to look for the Rio Grande Ground Squirrel in Texas

Most sightings fall in April to May.

1,651 Texas occurrence records (iNaturalist and GBIF) by month of year. Shows when the species is recorded, not a guarantee of presence.

Monthly Texas records (table)
MonthRecords
January16
February21
March147
April334
May380
June196
July195
August140
September98
October77
November36
December11

Monthly rio grande ground squirrel occurrence records (iNaturalist and GBIF) in Texas.

Seasonality

Year-round in Texas, with recorded sightings peaking in April–May.

Occurrence map

Where Rio Grande Ground Squirrel has been recorded in Texas

300 records mapped · zoom and drag to explore

300 Texas records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Lake Colorado City State Park 28
Balmorhea State Park 25
San Angelo State Park 17
Falcon State Park 13
Bentsen - Rio Grande Valley State Park 13
Mustang Island State Park 6
Elephant Mountain Wildlife Management Area 6
Padre Island National Seashore 5

Protected places with the most rio grande ground squirrel 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 Texas

CountyRecords
Cameron County 205
Hidalgo County 193
Kimble County 149
Tom Green County 77
Taylor County 77
Kleberg County 68
Brewster County 67
Starr County 62
Midland County 42
Pecos County 41
Reeves County 41
Mason County 36
75 other counties 603

The complete county distribution, spread across 87 Texas counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Rio Grande ground squirrels live in the open, sun-baked canyon country of the Texas Panhandle and Rolling Plains, and Caprock Canyons, Matador Wildlife Management Area, and Copper Breaks all fit that mold: dry grassland cut by red-rock canyons, with plenty of bare ground for burrows.

The seasonal pattern in Texas records is dramatic and likely reflects real biology, not just observer habits. Counts build through spring, peak in May, then collapse to almost nothing by December and January, consistent with ground squirrels going dormant underground for the coldest months rather than simply being harder to spot.

NatureServe ranks the species S5, secure, in Texas, and it’s a commonly recorded mammal in the state’s data, at the 85th percentile, though its global IUCN status hasn’t been evaluated, a reminder that plenty of Texas wildlife is still short on worldwide assessment even when the state-level picture looks solid.

Occurrence data from iNaturalist and GBIF.

More mammals in Texas 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"