Hi all....we have a chick who is 3 weeks old today. Last Friday we noticed she was having trouble walking and standing. One leg appeared to not want to work, then both legs seemed bad. We separated her out from the rest of the chicks. After a little research on this site we thought that it could be a B2 deficiency so we gave her some B2 but she has gotten no better. Spoke to the hatchery (Meyer) we got the chicks from and they agreed it might be a vitamin deficiency. They suggested apple cider vinegar so we tried that. She does eat and we've been giving her liquids (the vitamins in water) to keep her hydrated. Still no improvement. The chicks were vaccinated for Mareks. Anyone have any thoughts or ideas?