Got a call from my Uncle yesterday asking me if i wanted 6 RIR hens that are about 6 weeks old. Told him yes, free is free. I have 6 chicks coming from Meyer's the first of May. I decided I didn't need 12 egg layers so I am going to butcher the 6 free when they are ready. I know not to mix them together but how big do i let the six free ones get . Never have butchered anything so this should be fun. Just wanted to know how big to let them get.