I’m semi new to owning chickens, I noticed my chicken was walking with her tail down kind of like a duck. I checked her vent and noticed there was lice, I treated her and the rest of the chickens over the last three weeks, I haven’t noticed any lice on any of them. Problem is she still is walking like a duck at certain times with her tail down, to my knowledge they have all been laying fine.. does it take a while before they start to feel better after the lice?!