I haven't butchered birds as young as 14 weeks before. It's an experiment based on the advice of some people in the meat birds forum, that 14 weeks is optimal balance between feed consumption, carcass size, and carcass quality. I may not butcher all that young, but a few (the hatchery Buckeye, the crossbeak, and the bantam Cochins) are definitely not worth keeping. Unless you think Meyer Hatchery has good stock? I ordered him before I knew I would be hatching this year. My main goal is just to raise my own replacement hens for my flock