I have a 8-ish month old Black Andalusian I got from a flea market. I got her at 6 months old and she has been under quarantine since I picked her up with another of my hens so she would have a friend. she was very pretty when I got her. Nice and clean with bright eyes and shiny feathers. Being stupid, I forgot to give them a place to dust bathe so they got a bad case of mites. Well, her friend did. I assume Andy (The Andalusian. I know, clever.) did too, even though I never saw a single bug on her, only the other hen. I started treating them with permethrin and gave them a place to dust bathe, which they do so happily every day and the mites are almost all gone. Well, Andy's feathers are falling out now! She's not old enough to be molting, and even if she was, this isn't a molt. I thought she was pulling them out because of the mites. I had some meat birds with depluming mites and they pulled their own feathers out, but Andy's feathers are loose! When I have to catch her she looses 3 or 4 feathers every time because they are so loose. And her skin is peeling really bad. From her face to her vent, it's coming off in sheets. Could she be reacting to the permethrin? I have no idea. I haven't sprayed her in about 2 weeks, so surely that isn't it? And, even though she is about 8 months old, she has not laid me an egg.