Texas mammals

Coues' Oryzomys in Texas

Oryzomys couesi

Native to Texas S2 Imperiled in Texas

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

Coues' Oryzomys in Texas, by the numbers

Common in Texas 65th most recorded of 197 mammals logged in Texas

228 occurrence records

228 total records count every Texas occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 226; the monthly chart covers the 225 records with a full observation date.

When to look for the Coues' Oryzomys in Texas

Most sightings fall in February to March.

225 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
January3
February54
March76
April0
May0
June4
July1
August0
September2
October4
November74
December7

Monthly coues' oryzomys occurrence records (iNaturalist and GBIF) in Texas.

Seasonality

Year-round in Texas, with recorded sightings peaking in February–March, with a smaller rise in November.

Occurrence map

Where Coues' Oryzomys has been recorded in Texas

226 records mapped · zoom and drag to explore

225 Texas records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Bentsen - Rio Grande Valley State Park 4
Laguna Atascosa National Wildlife Refuge 3
Boca Chica State Park 3

Protected places with the most coues' oryzomys 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 171
Kenedy County 28
Hidalgo County 26
Willacy County 1
Other localities 2

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

Coues’ rice rat is a marsh and thornscrub specialist restricted in Texas to the Lower Rio Grande Valley and the South Texas coast, so the reference points attached to this record set, Big Bend National Park, Balcones Canyonlands, and Big Thicket, are generic statewide placeholders rather than real habitat; none of the three sits anywhere near the wet, dense cover this rodent actually needs.

All 228 Texas records come from GBIF specimen and survey data rather than iNaturalist photos, which fits a small, secretive rodent that’s rarely seen by casual observers and mostly turns up in trapping studies. The monthly counts are erratic, a hard 76 in March and 74 in November against flat zeros in April, May, and August, a pattern that looks far more like when trapping surveys happened to run than any real seasonal cycle.

NatureServe ranks Coues’ rice rat S2, Imperiled, in Texas, a genuine conservation flag tied to its narrow South Texas range, distinct from its secure global standing.

Occurrence data from 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"