Least weasel records in Michigan center on Hiawatha National Forest, Ottawa National Forest, and Seney National Wildlife Refuge, all Upper Peninsula sites. As the smallest carnivore in North America, small enough to follow rodents into their own burrows, it’s rarely seen even where present, and GBIF’s 122 records against 17 from iNaturalist point to trapping data over sightings.
The three-part peak in June, August, and December doesn’t describe a clean seasonal rhythm; with only a handful of records total, it more likely reflects scattered trapping and incidental encounters than a true activity pattern. NatureServe ranks the species S5, Secure, statewide despite how seldom it turns up in the record.
Full species profile
