When a chicken has wry neck symptoms, I usually advise human Vitamin E 400 IU, along with 1/4 tablet of B complex (not B12,) and a bit of scrambled egg which has plenty of selenium. Mixing a mash of watery chicken feed and water, with the small amount of egg, it can be fed to her several times a day while holding her. Wry neck is a symptom, which can occur with a vitamin deficiency, a head or neck injury, and can also be a symptom of a few certain diseases that affect the brain. Mareks, avian influenza, and certain respiratory viruses are some of those. It can take weeks to see improvement. Silkies are especially prone to wry neck.