Utah’s records for the northern flying squirrel are thin, just over 150 total, and rare enough to rank near the bottom of the state’s mammal list. Almost all come from GBIF rather than casual sightings, which fits a species that glides between trees after dark and rarely shows itself to people.
Uinta-Wasatch-Cache National Forest holds the only named cluster, matching this squirrel’s need for connected conifer stands with old trees for cavities and glide paths. Dinosaur National Monument and Ouray National Wildlife Refuge sit in drier basin country nearby and mark the edge of where surveyors have looked, not necessarily where the squirrel lives.
Reports build through summer and peak in July and August, when nocturnal trapping and camera surveys are easiest to run in the high country. NatureServe lists it vulnerable in Utah, consistent with how narrow and patchy its confirmed range here looks.
Full species profile
