So my chickens all have feather loss, some worse than others, and it is not molting. I have only one rooster to 12 hens...so that should be the problem. I have checked them over for lice-don't see any. I guess it could be mites...what do I do? I have heard of the roost mites, so I am going to try putting Sevin dust in their coop...and then again in a week or two. What about the chickens themselves? I have heard of doing a sevin treatment on them by putting them in a pillowcase...any other options? I just can't figure it.t..