I have a chick that is just over a week old. She has acted a bit off compared to the others all along. At first I just thought she had a good/calm temperament. Now I am becoming concerned. She is chirping much more often than the others. She walks around confused. Today I put her down gently on her back and she could not right herself. She is not growing. Only a few feathers have started coming in, which in comparison to her hatch mates looks like nothing. It seems that the others are always picking on her. She has had pasty butt, but I watch to take care of that, so I know she must be eating/pooping some. This is my 4th year of chick raising so I am not entirely a newbie. I honestly thought she may be blind, but have seen her peck at others. So I am not sure. Any thoughts/suggestions?