Hello, I have one Americana rooster with about 30 hens. I have put saddles on several of the hens because their back are bare from mating. Now the rooster's back is getting bare in front of his tail, I don't think he is molting in late May. He takes dust baths along with the girls. Might a hen be dominating him? How do I check to be sure its not mites? Thanks for your help!