My chickens are losing their tail feathers and combs! No joke I walked out to them one day and on was missing her comb and tail feather! I don't think they are being picked on because 4/7 of my hens. I don't know what is going on! Other then that they are acting normal. They don't even seem in pain with the whole comb thing. HELP I DON"T WHAT TO DO!!!!!!!!