Dear Backyard Chickens, I would like you to post information on heritage birds (especially barred rocks) vs meat birds (ranger and cornish X) at 12 weeks. I know the rangers and especially cornish are larger at 12 weeks however I would like to see the difference. Sent me pictures of live chickens, dressed chickens, cooked chickens. Send me stories and information. Any thing on this subject. Lots of Pictures especially. Thank You!!!