I doubt they would do anything. We get them in town once in awhile, and some of my friends have had them tear down their birdfeeders.
I have a great bear story. Me, my brother and a friend were rabbit hunting in Feb this year. We came up on a big brush pile that had some coyote tracks heading into it. The beagles went under the pile and started barking and came running back out. So I figured there was a coyote in there and was going to shoot it. So I pushed through the brush so I could look into the den under the pile, I had to almost crawl to where I could see. Well it wasn't a coyote, it was a 250-300 pound black bear that the dogs had woke up, it was yawning and I was about 15 feet from it, I could see all it's teeth. Now I'm think if this is a sow I am in big trouble.
My brother had a single shot 20 ga and a .22 pistol, my buddy had a pump .410 (not even close to bear calibers), and I was so tangled that I couldn'y even lift my gun, so I start backpeddling out of the pile, trip and fall down. I hear my brother say here it comes, I roll over and start running, I hear my brother start shooting his pistol so I look over my shoulder and the two of them are laughing. The bear ran away from us. I can laugh now, but that was too close for comfort.