We have four chickens they are 17 weeks, and one chicken who is 7 months. The older one is free range, but we would really like to get her to sleep in the coop at night rather then on the porch. We have tried a few times to put her in with the other four and does fine until she see's the food and water. She will start eating or drinking and won't stop unless another chicken comes near her and then she will start pecking them. So my question is, what is the best way to integrate a chicken into the flock who is very territorial over food and water?? TIA!!