My jersey giant has been losing neck feathers for about a month now. The other day she was taking a dust bath when I noticed, not only is it her neck but its her butt and sides that have feather loss. I brought her in and gave her a bath and used soap on the bare spots. When she was wet the feather loss was much more noticeable because before this, her fluff was hiding it. So here she is after her bath Does this look like she has a parasite problem? None of my other chickens have this problem and and I dust their coop often with DE.