I have no idea what is going on with my red star hen CoCo. Three weeks ago she was found sitting in the coup when everyone else had gone out for the day. I noticed she was not walking. I moved her away from the other birds and gave her vitamin water. Two days later she acted like nothing ever happened. Running around acting totally normal. Then 2 days ago I find coco again. Not walking. Her legs are tucked up under her when I pick her up. Take her and do the same thing as before. Now she is standing but not walking. The 1st time this happened I thought she may have been poisoned. Now I have no idea what to think? She is totally normal besides she can't walk. So what do you think?