I have a batch of 3 week old meaties. One chick has developed splayed legs that stick out to the sides so that he is unable to stand. He is being walked on by the other birds but they are not picking at him at this point. I've seen him eating and he must be drinking, but it's obviously a strugle for him to get around. Should I cull him now or see if he can hold on for a couple weeks in order to make a usable size?