House mice aren’t a wild Coastal Plain species chasing habitat the way a native rodent would. North Carolina records near Pocosin Lakes, Mattamuskeet, and Green Swamp Preserve mostly trace back to the buildings on those properties, barns, visitor centers, and storage sheds, rather than the surrounding pocosin and swamp forest itself. Wherever people store grain or leave a building unsealed anywhere in the state, a house mouse can follow.
This species came to North Carolina, and to the rest of the country, as a stowaway on ships from Eurasia centuries ago, and it still lives almost entirely around people. It nests in wall cavities, stored hay, or cluttered outbuildings, breeds quickly, and eats whatever’s stored nearby, seeds, grain, pet food, kitchen scraps. NatureServe lists it as an introduced species in North Carolina, not part of the state’s native fauna.
Records run every month of the year without a strong seasonal drop-off, which fits an animal that lives indoors and doesn’t need to track outdoor food supplies the way a wild rodent does. The reports clustered in late fall and early spring likely reflect when observers happened to notice mice around buildings, not a change in the mouse’s own activity.
Full species profile
