Louisiana holds 1,069 documented records for the fulvous harvest mouse, but only 3 come from iNaturalist photographs; the rest are GBIF specimen and survey entries from a small, nocturnal rodent that’s rarely seen in the open.
The moist eastern edge of a Texas-centered range
Most of this species’ US range runs through Texas and Oklahoma’s warm grassland, and Louisiana sits at its wetter eastern margin. Kisatchie National Forest’s pine uplands offer the grassy understory and briar cover the mouse needs to travel unseen, while Atchafalaya National Wildlife Refuge and Jean Lafitte National Historical Park and Preserve provide it along marsh and bayou edges instead, dense grass and shrub tangles at the boundary between wet basin and drier ground.
A climber in the grass, not a mouse of open ground
A fulvous harvest mouse climbs stems, vines, and low branches nearly as often as it moves along the ground, using that grip to reach seeds and cross tangled cover without exposing itself. Its nest is a compact ball of grass and plant fiber tucked into matted vegetation or a low shrub, built for an animal that depends on unbroken cover more than any single plant.
Status in Louisiana
NatureServe ranks the fulvous harvest mouse S4, apparently secure, and USGS NAS doesn’t list it as nonindigenous, so it’s native to its mapped Louisiana range.
Full species profile
