I live in Wisconsin. This past June when the weather got warm, this girl started loosing the feathers above her tail and around her neck. I attributed it to my rooster (no longer in the picture), so I got her a chicken saddle so she might heal. The chicken saddle made her lose the feathers around her wings, so I gave up on that because it was only making things worse.
In mid-July, I noticed a significant mite problem in my coop. I pressure washed the entire thing and dusted the cracks with DE, added DE to their dust bath (though they didn't like it), and sprayed all four hens with Vetericyn (because at this point they all had some feather loss from the mites).
Every once and a while I'll spot 1 or 2 mites around the coop, but not nearly as many as there used to be. (I always kill them.) My three other hens have recovered mostly fine, with a few feathers missing here and their... but this girl is beyond repair. And she's near the bottom of the pecking order. The back and sides of her neck are almost completely bald.
She keeps getting worse no matter what I do, and I don't know how to find a vet in the area that can treat her. I've also tried "Rooster Booster Pick-No-More Cover-Up Lotion for Poultry," but that just died her skin purple. Then I read somewhere to try vasoline to keep the others from picking her and to keep her from picking herself. That didn't work at all and actually ruined her remaining feathers and she looks like a drowned rat. I could tell it made her feel good though, when I was applying it, so I don't consider it a total loss.
This past weekend I gave her a warm bubble bath to get the vasoline off, and it hardly worked! Did I not use enough soap? I used tons. It's September now and I'm worried it will start getting cold soon. As a last-ditch effort I purchased a polyester-knit chicken sweater on Etsy. It should arrive any day now. I really hope it helps her and doesn't end up being some ridiculous cutesy costume.
What should I do? Please help! How can I find a chicken vet in the area? What would you do to help the girl out?