I have a few Buff Orp Cross chicks. They are Buff Orp mixed with various other breeds. I had one cross that I butchered at 6 months because I just had too many roosters. And he was actually pretty big. Now I am sure some of these ones I have now are roosters and they are almost 12 weeks old. How old would one wait to butcher them? I have no idea how much they weigh. What is usual weight to butcher any breed? Does 16 weeks sound good for these guys? Some are already the size of my smaller hens.