My Buff Orpington Emmy has saddle feathers that appear to have been cut with scissors. My 4 hens all get along fine- 2 Buff orpingtons and 2 RIReds all 7 months old. They are in a 10x 10 ft run most of the day and I let them free range in my backyard when Im home. I have not seen any signs of predators. What could have caused this?