I currently have 3-4 hens that have had their butt's plucked almost bald. One of thoes hens also has had a lot of feathers plucked from the base of her tail, the spot is almost bald. What could be causing this. I have seen one hen pluck a feather from another and then eat it. But I know she must not be the only plucker because she is one that has a bald butt. I have read that it could be caused by lack of protien, we currently feed them layer feed with kitchen scraps as treats. They can only free range when they can be supervised though because we live close to neighbors. Could they be bored from being kept in their run all day? I had my dad check for lice/mites and he said he didn't find any? Should I remove the hen that is being plucked? What should I do? Thanks