We have a baby chick who is walking very funny. It's almost as though her/his legs grew faster than his body. He walks flat-footed or on his elbows. It appears like he can't support his body. He is about two weeks old. We are feeding non-medicated chick starter and plain water. I put a tiny bit of vitamins a few days ago, but don't do it regularly. Is this a vitamin deficiency? I was planning on moving the chicks out of the brooder box tomorrow because it's getting a bit small in there for them. Did I wait too long for this one?