Those are not RIR's. Those are production Reds, which are the hatchery version of RIR. If you look at some of the pictures in this thread it is easy to see the difference between Heritage RIR's and Production RIR's. Don't know about butchering, sorry.Here is a RIR and his buddy in the background that I got out of the 'frying pan special' at the feed store. I was actually trying to get a pic of some other chicks, but these birds are so up in my gridness anytime I go out. Funny birds!They are about 6 weeks old now. About what age are they usually best to butcher? Thanks! Jason