We had (past tense) 2 hives in Vanderbilt, Michigan, (northern part of the state) and last fall bears plowed through our electric fence and destroyed our hives.
Our hives were on the edge of our clover plot, and the bears must have rolled around in the clover after they gorged themselves, since there were several huge circles of matted down clover.
We are going to rebuild/strengthen the electric fence with more wire strands this weekend. We are also going to try the behavioral training w/bacon on the wires or peanut butter as one other post recommended. Next month we plan to get two nucs and try again.
Last weekend, we discovered a bear had torn down my birdfeeder. We only camp on the property on weekends, and had not had a feeder up all winter--had just put it up the day before. So, no more bird feeding, either... We don't want to encourage more bad bear behavior...