I do not free range my chickens because I have big dogs that love chickens so mine are in a large coop. yes they can get bored so I make sure and add things to occupy my hens and Roo. I also have bare ends but I had 2 roosters in with 15 hens an I was told that was why. I built a dirt bath area and I have several different height perch areas in the "bedroom" area and I have put in a wooden bridge, some stumps and some large cut tree limbs in my coop. I also keep them busy with snacks for them. hanging lettuce etc and I throw seeds to them on the dirt so they have to look for them. They are also getting a mirror in their coop. I might also add a bale of straw at some point.My chickens have been cooped up for the last 2 weeks with no free ranging while I wait for new grass seed to come in. There laying hasn't been affected but it looks like the feathers around their vent and their tails are getting plucked out. Are they getting bored from being cooped up and pecking at each other?