Michigan’s gray wolf record is written almost entirely north of the Straits of Mackinac. Of 408 records, Isle Royale National Park alone holds 67, and the Upper Peninsula’s big timber counties, Marquette, Chippewa, Keweenaw, Gogebic, Baraga, carry most of the mainland rest.
A comeback on its own four feet
Michigan’s mainland wolves were gone by the mid-twentieth century, and their return needed no release program. Animals dispersing from Wisconsin’s recovering population crossed into the Upper Peninsula, and by the early 1990s packs were denning there again. State winter surveys have counted several hundred wolves for years now, nearly all of them north of the Straits, in the hemlock and hardwood country around Ottawa National Forest and Hiawatha National Forest. The record’s strong May and June pulse fits the biology: pups are born in spring, packs stay close to dens and then rendezvous sites, and wolves are abroad and noticed most as the snow leaves.
Isle Royale, the watched island
Isle Royale’s wolves walked an ice bridge from the mainland in the late 1940s and became half of the world’s longest running study of a predator and its prey, the wolf and moose work that has run since 1958. Inbreeding ground the island population down to a single pair, and in 2018 and 2019 managers ferried in wolves from Minnesota and Ontario to restart it. The island’s outsized share of the Michigan record reflects that decades of attention as much as the animals themselves.
Status in Michigan
NatureServe ranks the gray wolf S4, Apparently Secure, in Michigan, and the species is native to the state. USGS NAS does not list it as nonindigenous here.
Full species profile
