Environmental News

Relocated Isle Royale wolves form groups, reduce moose herd

A gray female wolf, right, courts a black male wolf.
A gray female wolf, right, courts a black male wolf, left, with a "play bow" invitation to engage during the 62nd year of the Michigan Technological University Winter Study on Isle Royale National Park in Mich., on Feb. 29.
Rolf Peterson | Michigan Technological University via AP file