https://apnews.com/article/isle-royale-wolves-moose-wilderness-climate-change-c81f056c9300cc3e7abb13d29b5362d7 > TRAVERSE CITY, Mich. (AP) — Gray wolves are thriving at Isle Royale National Park five years after authorities began a last-ditch attempt to prevent the species from dying out on the Lake Superior island chain, scientists said Wednesday. > Meanwhile, the park's moose population continues a sharp but needed decline. Overpopulation of the lumbering mammals were causing their own starvation as they outstripped available balsam fir trees — their primary food during long, snowbound winters, Michigan Technological University biologists said.