I have a 5 day old chick who is very fat looking. He can't walk very well and is very vocal. He also doesn't keep his eyes open (unless you flash a camera in his face oops.) I have never seem him move around without being somewhat forced. It's a rir crossed with either my wyandotte or buff orpington. This morning it fell on it's back and couldn't get up. It was the last chick hatched and is now the biggest.