Wisconsin fisher records are centered on Chequamegon-Nicolet National Forest and the surrounding Northwoods, where extensive forest, woody structure, and wetland complexes provide connected cover. Reports are strongest from November through March, when tracks persist in snow and leafless woods improve visibility for an animal that is difficult to encounter in summer.
The 83 iNaturalist records are documented detections, not a fisher abundance measure. Snow conditions, road and trail access, trail-camera placement, and repeat observations can all magnify the winter signal, while low reporting outside the Northwoods does not by itself establish absence.
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