House mice are introduced commensal rodents in West Virginia, and NatureServe’s SNA rank, not applicable, reflects that introduced species don’t receive a state conservation status. With 18 records split fairly evenly between iNaturalist (14) and GBIF (12), most sightings likely come from people encountering mice near buildings and disturbed ground rather than structured trapping surveys.
Records stay remarkably flat across the year, one to three sightings per month with a modest June peak, that steadiness fits a species that breeds year-round indoors regardless of outside season, so its visibility mostly reflects observer activity rather than any real seasonal cycle in the mouse population itself.
Full species profile
