House mice are introduced commensal rodents in New York, and NatureServe’s SNA rank, not applicable, reflects that introduced species don’t receive a state conservation status. The record leans toward GBIF (448 of 517 records), meaning trapping and specimen collection, not casual sightings, documents most of what’s known here; Long Island’s 18 logged sightings mark the top named site.
July through October account for 277 of the 517 records, more than half the total, a late-summer-into-fall surge that likely tracks population growth spilling into visible spaces before cooler weather pushes mice back indoors.
Full species profile
