I'm starting this new thread in hopes of helping more hens and reaching out to stymied chicken owners. The original thread title is below and contains 8 pages of posts including photos. Basically, if you have never seen a mite on your bird, yet it has broken off feathers or is being steadily deplumed from the the tail to the head, your bird might have mange. Someone on the previous thread posted the name of it which escapes me now. I am hoping my lengthy experience will help someone. There's just not enough information out there. It's been about 4 years now for my poor chickens with the mites. I just wanted to give an update for whomever is interested or needs more information. This thread can be found under "Broken feathers mites if you are experiencing this please read." 1.Our hens were treated for mites (that I never saw) for 2 endless years. You name the product, I've tried it. No relief. 2. culled 15 hens who had mites, left 15 who didn't, to see if they'd get it anyway. (checking to see how it was spreading) 3. the ones who didn't have mites wound up getting them eventually. 4. treated with lime sulfur dip weekly and was terribly discouraged that it didn't seem to do anything.(but keep reading) 5. Made two separate flocks: the "older" girls who always had mites, and the "new" girls who never had them, in 2 separate coops. 6. the "older girls grew new feathers in the winter and now look beautiful! They've been mite-free for 6 months, hallelujah. These are the same hens who were dipped weekly. 7. the "new" girls (28 of them) now are the mangiest bunch of chickens you've ever seen. Sigh. The only contact they had with the other flock was the roosters fighting through the fence. But I did see Juncos in their feeders a lot. No mice like in the other coop. 8. I am convinced the LimePlus Dip from Dechra on Amazon is the key and am going to dip and re-dip all 44 birds next month when it warms up. 9. If you've never seen a mite, yet your chickens are being deplumed, I guarantee it's mange. SULFUR DIP MAY BE YOUR ANSWER. Look back on previous posts in the above-mentioned thread and you will see photos I posted of how to dip the birds. I am interested in hearing your stories, hopefully success stories! I'll get notified if you reply to this thread.