Gray wolves are thriving at Isle Royale National Park five years after authorities began to prevent the species from dying out.
“It’s been hugely successful,” said study co-leader Sarah Hoy, a research assistant professor and animal ecologist. “That’s what everyone was hoping for.”
Scientists believe the island’s first moose swam to Isle Royale around the turn of the 20th century. Wolves arrived in the late 1940s, apparently crossing the frozen lake surface from Minnesota or the Canadian province of Ontario. Though technically part of Michigan, that state’s shores are farther away.Article content
“Species come and species go,” Proescholdt said, arguing that the federal Wilderness Act “directs us to let nature call the shots and not impose our human desires.” This year’s field study detected an 11-member pack on the main island’s eastern side and a five-member pack on the western side. There were three groups of at least three wolves each, and a few loners or pairs. A new pack also appears to be forming, the report said.
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