I have a dozen 3-week old Freedom Rangers. They've been fine until last week when one girl wasn't able to walk. I isolated her and, after searching BYC forum, added a B vitamin complex to her drinking water. After a week she is back to walking again. She was always fine with eating, drinking and pooping. Now today I notice that another chick has a leg that is malformed - it juts out to one side. She is getting around and seems to be happy but when I examine the leg and press gently on the joint she does seem agitated. Still, she's moving about and eating and drinking. Up until today I've had lights on 24/7 and they've had access to food and water that whole time, although they don't eat 24/7. They are out on the grass during the day and inside on pine chips at night. I added the B complex to the common drinking water. I sprinkled a calcium supplement on their food (it's calcium from small-shelled animals - I forget exactly what) and will start mixing that in on a regular basis. They get a broiler mash from my local organic farmer and it's what I've fed every single one of my chicks - layers and broilers, with great success. This is the first set of Freedom Rangers I've had and am wondering where I've gone wrong. Help!