Beavers turning up near Big Bend National Park are one of Texas’s more surprising records: a wetland engineer surviving along the narrow ribbon of the Rio Grande and its desert tributaries, hundreds of miles from the swampy East Texas habitat at Big Thicket National Preserve that better fits the species’ reputation. Balcones Canyonlands bridges the two, proof that water and woody banks matter far more to this species than the surrounding landscape’s dryness.
Records peak in April and fall by roughly three-quarters through July and August, a swing that likely reflects both real seasonal activity and beavers shifting to nighttime movement once Texas heat sets in, when a mostly nocturnal, water-bound animal becomes far harder to detect. NatureServe rates the species secure statewide, and its dam-building can turn even a modest desert stream into a small oasis for other wildlife.
Full species profile
