We have four adult hens for eggs and today got 6 chicks from the hardware store to -- we think -- raise to eat. We just got what they had. Never done this before, and it's just a backyard operation. Question:Any reason NOT to butcher australorps, barred rocks, wyandottes (other than they are lovely birds)? Guy who sold them to me said they need to grow to 10 weeks or maybe a little more since they are not strictly meat breeds. Opinions?