I was afraid someone would ask me that. I got the information from someone else and these were the only instructions. I am pretty sure it is not a dropper full, because of the size difference in a human baby vs. a chicken.
I would go to the first line on the dropper and start decreasing from...
It could be a neurological problem, or hopefully not, Merek's disease.
For a possible neurological problem, get some baby vitamins like Poly-Vi-Sol and give her the following:
1 drop twice a day for 3 days
1/2 drop twice a day for 3 days
1/4 drop twice a day for 3 days, then
1/4 drop once a day...