I had a chick limp and keep it's leg up due to injury (I think mom hen stepped on it) starting at day 3 or 4. I didn't know exactly what caused it and what to do - but I gave it poly-visol (no iron) baby drops 2x a day , did a bit of "physical therapy" by gently pulling the leg up and back a couple of times each time I gave it vitamins, kept a close eye on it when it could not keep up with momma hen - and provided extra heat light as well, and about 4 or 5 days later - she is running with the rest of them...and you would never know anything was wrong. Hope that offers some encouragement! I think the vitamins are great for them in healing! Good luck!
