i hatched a chick for a class at a homeschool thing and the chick had a slipped tendon and they didn't cull it, it has a home now but i'm positive that it's going to be in permanent pain.it was walking on it's joint . i wish they had just culled it but every person at the school thought that...
if he can't get to food easily/ or is getting trampled or bullied by the other chicks/ or is just all miserable then you should cull him i'm sorry to say