I have a white leghorn hen who has a very dirty bottom from pooping- to the point that most of her feathers back there are clumped together. Should I try to clean it so the feathers don't get pulled out by the weight of it all? Also, is she supposed to be bare under her tail feathers? We just had to get rid of our rooster because he would not leave her alone, so I want to make sure that the bareness is normal. Any help is appreciated!