So, I've found a lot of conflicting information on when to butcher a heritage breed of chicken being raised soley for meat. I got a group of white rock cockerels, and am trying to figure out when I should butcher them. I went with the white rocks as opposed to the cornish X because I didn't feel like raising mutant bird even if they are more feed efficient and grow faster. They are four weeks old now, and act like chickens rather than piles of immobile feathers. Anyway, I've heard that "when they crow they go" as a rule of thumb. Or 12-15 weeks they should be butchered. Or sometimes even later. So that leaves me wondering, when do you think is the best age to do the deed?