Hi, I noticed that my cornish cross is growing a bit slow. It lives with two (as well 5 weeks old) gold sex links. It eats 20% organic feed, but at 5 weeks it's still barely at 1.5 pounds!!! By now it should be at least at double that. It is growing faster then sex links, but still way too slow. It walks around, and it does not seem to be sick. What am I doing wrong? I only have one, as I am trying to determine if/how would I raise them next year. Thx.