Northern grasshopper mouse records in Utah come almost entirely from GBIF-linked survey data, not casual sightings, nearly 870 in total but only three flagged on iNaturalist. That split fits a mouse that hunts insects and even other small rodents at night and rarely turns up for a passing hiker.
Capitol Reef National Park anchors the one named cluster, with the high plateaus and canyon country toward Bryce Canyon and the Escalante River offering the same open, sandy ground this predatory mouse favors. Grand Staircase-Escalante National Monument sits in similar terrain nearby, though a lack of records there just means fewer surveys, not that the mouse is absent.
Reports climb steadily from spring and hold through summer, peaking in June, when trapping surveys run longest into the warm desert nights. NatureServe rates the species apparently secure in Utah, in line with how wide a stretch of canyon country these records span.
Full species profile
