I would agree with junebuggena to look at the possibility of wry neck. That is when the neck is twisted to one side, down, or up, and is a neurological symptom. Sometimes it is caused by an injury or a vitamin E deficiency from older feed or an unbalanced diet. It can also be caused by several diseases. Feed him water with chick vitamins and give a little cooked egg bits for selenium, a mineral that helps vitamin E. A little plain yogurt on his food or te egg can give thiamine which also may help.