The actual reason for the Isle Royale wolves decline was discovered a month ago. Three of them, an alpha male, another male and a female, all apparently healthy, had fallen down a mine shaft and were just found in May.
Here is some info: Minnesota Public Radio http://minnesota....neshaft/ StarTribune http://m.startribune.com/news/?id=159109945
MandoZink
Jun 22, 2012