Hi, please help! I have a 4 week old chick that I just noticed is having some difficulty walking, her legs seem weak, she is walking a bit uncoordinated and when she tries to move to fast her legs splay out from under her. Any ideas what could be going on here, and what I can do to help her? She came from a feed store that orders their chicks from Ideal and Privett, she is a Barred Rock and according to the feed store was vaccinated. They were treated with Sulmet for 5 days, but have been off meds for a week now. I put probiotics and electrolytes in their water for a few days after stopping the meds. They are eating medicated food, a couple times a week they get a small amount of dried meal worms, dry oat meal.