My chicks that were going lame are doing better now! I started them on a new batch of feed and put a vitamin supplement in their water yesterday. I was pleased to find this morning that most of them are doing a little better. I had initially thought they had some sort of infectious disease that was affecting their legs but now I think they have a vitamin deficiency or the bag of feed I was using was defective. It'll be a few more days before I can tell for sure, but until then I'm staying away from that food brand!