It is my understanding that while nutri drench is a good thing, it does not contain the necessary amount of the B vitamins (niacin and thiamine) that can be the problem. This is why using a vitamin B complex capsule is recommended.We have looked the injured bird over many times and can't see anything wrong or broken, but the way you describe your bird walking is just like ours does. In case it's a vitamin deficiency, I just gave a concentrated water bottle with poultry nutri-drench in it, just for the sick-o.