I have a hen whose feathers on her back are damaged by an aggressive rooster. Well, that rooster is now in our freezer, and has been for several weeks, but the hen's feathers do not seem to be recovering. She still has some that are torn and shredded. I know it can't be from the other hens, because she is the top hen in the pecking order. How long might it take for her pretty red feathers to grow back? Will I have to wait for a moult? Thanks for your input!