Between bob cats and bears few people keep chickens long here.The rest are killed by coons,hawks and dogs.One of my neighbors keeps dogs beside his coop and a radio playing.
We live under a canopy of trees that hide our chickens from aerial predators .When we free range them they love to go in the woods behind us and scratch around in the leaves for bugs( hilly terrain)Its also cooler there in the summer. Our Brown leghorns, Welsummers, Ameraucana's and Dominiques...
Today was only the 2nd time I let my chickens out all winter and after I saw some crows chasing 2 hawks it made me nervous so I didn't leave them out but 3 hrs
Coops that aren't close to your house are higher risk of being destroyed by bears.
Most bears will run once they're detected. I've never had one in my yard to my knowledge but we have had them in our driveway. My coops 20 ft from my house.
I built a coop close to the house to deter large predators but building them into a hillside (like a cellar or a dug out) protects them better. Here is a link to an underground coop built by one of our own members! https://www.backyardchickens.com/articles/oblio13s-underground-chicken-coop.47864/