Isle Royale wolf death caused by pellet gun injury

Further investigation into the death of a female wolf that recently left Isle Royale National Park for the mainland determined a pellet gun was the cause of death.The wolf’s remains were discovered on the shore of Lake Superior on February 8. The animal had been radio collared at the Park for long-term study by researchers at Michigan Technological University.

Park Superintendent Phyllis Green said this year several ice bridges had formed allowing for what has historically been natural movement of wolves to and from the island in extremely cold winters.

Green said death was caused by a lightweight pellet that traveled  between two ribs causing fatal damage. The wolf was not pregnant and has been returned to Michigan Tech for further research.