Wisconsin House Mouse records around Horicon, Kettle Moraine, and state parks are best understood through the buildings, farms, campgrounds, and food storage adjoining those public lands. Reporting rises from August through December, when harvest, cooling weather, and movement indoors make mice more likely to be trapped, photographed, or noticed.
The 30 iNaturalist records are a record of observer submissions, not a measure of House Mouse abundance. This familiar commensal is seldom reported to biodiversity platforms, and one infested structure can yield repeat encounters, so the sparse map greatly understates presence while offering no sound population comparison.
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