Born Sat. chick was doing fine just two hours ago. Went to the brooder a few minutes ago and he has his head against the wall, I pet him and it's almost like he's turned his head to me like a cat liking his neck to be petted. But when I pulled him away from the wall, he doesn't return his head to the normal position. He isn't wanting to keep his head straight. No longer as active and running around like before. What's wrong with him? NONE of the other chicks are doing this. He came from an egg from our flock of chicks.