TRAVERSE CITY, Mich. (AP) — A gray wolf that was moved to Isle Royale National Park in Lake Superior last fall has wandered back to the mainland.

The female was among four wolves flown to the island in hopes of rebuilding a population that had nearly died out. Officials said Wednesday she recently crossed an ice bridge back to the area where she was captured, near the border between northeastern Minnesota and the Canadian province of Ontario.

Another of the translocated wolves died, leaving just two newcomers at the park.

Officials believe two wolves that have been there for years remain alive, although they haven’t been spotted in the few days since scientists arrived for their annual winter study of Isle Royale’s wolves and moose.

Superintendent Phyllis Green says the wolf translocation program will continue.

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