Chicken with a weak neck! Help!!!

[prinellie]

These symptoms sound like wry neck . Thiamine B1 deficiency. A multi vitamin like polyvisol will help. If you want to target the thiamine deficiency , find a vit B tablet and crush it into powder and sprinkle on the feed. Alternatively you could dissolve a half a teaspoon of marmite in hot water and pour that over feed.
Brewers yeast is another good source of thiamine.

http://www.thepoultrysite.com/publications/6/diseases-of-poultry/216/vitamin-bi-deficiency

It does sound like wry neck. The one I had just has this horrible crook in her neck. I treated mine this way (above) when she was a chick and she came out of it. Then one day she had it back. She then got scissor beak. She is pathetic and I am planning on culling her. Hope you have better luck