Just read all these posts as I purchased a 26 acre farm in Southwest VA in a wooded area up a mountain, and have my first chickies in the brooder. I have a very sturdy chicken house and lots of electric fences, but have been giving a lot of thought to bears.
My sister owns 35 acres in the Shenandoah near the national park and has lots of bear visitors up there. She bought her land from an elderly orchard man and his wife and the bear stories will give one food for thought. For instance: orchard man Alvin built a lovely rustic cabin near his largest orchard for weekend getaways and for the kids and grands. His wife came to the cabin on summer days and cooked lunch for him and the orchard crew. She was minding her own business and the cooking one day when a bear decided to rip the front screen door off the cabin. The bear was part way through the solid interior door when she ran out the other door and into her car. (no cell phones in those days). She drove down into the orchard to get Alvin and he came to the cabin, toting a heavy gun. The bear was partway in the house when Alvin shot him dead.
Moral to the story: I agree with those not wanting to kill "beautiful creatures", BUT, if a bear is ripping through my back door or my coop, HE is going to die, go to the meat packer and take up residence in my freezer. I don't think AR's are the way to go unless you have no neighbors. I keep a large game rifle and I know how to use it. There are 130 acres of farmland behind my farm and no roads. I bet there are more impressive critters out there than you can have in a nightmare.
My life has taught me that it is best to be prepared for the worst and hope it will not ever happen. I sleep better at night that way.
My coop is a large and heavily-built storage building with windows lined with galvanized hardware cloth and solar powered fans. Tight wood floor is off the ground. (I could live in there if I didn't have so many dogs). Coon proof latches. Runs have three kinds of fencing and electric tied to grid. The guy before me raised valuable alpacas, and having seen mountain lion, and worried about bears on the property, was well prepared. I think my spoiled chickens will be fine. Shortly adding goats and miniature donkeys and will probably get a livestock guardian dog to take care of everybody, including my numerous smaller dogs. Then I will REALLY sleep well at night!!
I do have a 1700 lb draft horse, but no creature on earth is going to take him on......not even the odd dinosaur left over from the extinction!!
Interesting caveat to above though: even if these chickens steal my jewelry, rat me out to my relatives, bad mouth me to the neighbors and spend my money gambling, drinking moonshine and shooting pool.....I will never be able to kill one of them!!