We have a older pullet who is going through it. She has lost all of her tail feathers and feathers near hear head. She is the only of our 10 other chickens that has it. She is looking kind of sick too, stiff comb and skinny wattles. Sometimes she sits hunched up. She still eats and drinks but i think she is a bit of a outcast. We are planning to put her somewhere else with another pullet to calm her. Is that a good idea?