Hello I have been dealing with feather loss in most of my hens for a couple months now. My husband and I discovered lice a few weeks ago and have treated the coop and the flock. My hens do not seem to be regenerating their feathers on backs, despite adding feather conditioner and rooster booster to their feed. Some of them actually look worse. I have tried researching if there could be other parasites that are causing this issue but cannot find much more information then lice/mites, or over breeding from rooster being the culprits. We only have 1 Roo for 22 hens, so he is pretty busy. Am I missing something here? Or am I just being impatient. My hens look horrible! Thanks in Advance!