Thank you for your reply. I took her to the only vet who would even see a chicken and he gave her a shot of b vitamins but she still can't lift her head which is under her body so has not had water or food for four now. What a fighter but it is a fight she is losing. Heart wrenching, wish I knew what else to do. I am adding vitamins to the drinking water of the other chicks who are still so young. Again, thank you.
This is not something that will resolve itself overnight. One injection from a vet will not reverse this deficiency. B1 not B6 is what your bird needs.