There is some hope!
I had a couple of silkie chicks that did the same thing. I called the local Extension office, and farm supply stores looking for answers. I had several people tell me it was "Corzy" (not sure how to spell that), and that I should just dispose of the chicks. When I looked up info on the disease, there were other symptoms my chicks did not have. I separated them from my other chicks and gave them terramycin antibiotics but don't think it helped. One chick was so bad that my husband finally put her down. The other, "Bennie," actually got better. She grew up normal, but with a little head twitch now and then. I kept her separate for several months and she became very tame, and even learned to ring a bell! She graduated and had a great life with my other chickens (who never became sick from being exposed to her). I do think she continued to have a weak immune system since she'd get the sniffles every time the weather cooled. She lived a couple of years, and then we went for a weekend trip during the winter. A friend checked our chickens for us. When we came home, she was dead. I don't know what happened, but I believe if we'd been there she probably would still be with us. She was one of my favorites.
I never found out what exactly she and the other chick had. Hope this helps.
