just bought some 13wk old pullets. They'd been in with some young turkeys and about 100 other pullets, and one of them has lost all its feathers along the center of its back. The skin is flaking but does not look infected, i.e. there are no open wounds and nothing is oozing. But I haven't ever had chicks that were around roos before so dont' know if I need to treat the area. Have some medicated spray from my vet for the dogs that helps 'heal' sore muscles and scrapes/bruises, but don't know if I can use it on chickens or not. Should I leave it alone or treat it, and if so, what can I treat it with?