House mice are introduced commensal rodents in Nebraska, and NatureServe’s SNA rank, not applicable, reflects that introduced species don’t receive a state conservation status. Most of the 40 records appear on iNaturalist (38), with 29 in GBIF and much overlap between the two, so casual sightings, concentrated in Douglas and Lancaster counties around Omaha and Lincoln, drive most of what’s documented about this species here.
Records scatter across every month but May, with August highest at 7 and no sharp spike, which fits a mouse that breeds indoors year-round regardless of outside conditions.
Full species profile
