wrangler, it's an interesting question and one I see pop up often in the breed threads. There's no clear answer on how many generations it would take. The old adage, "if it looks like a duck, walks like a duck, quacks like a duck...it must be a duck" or however it goes runs true here. If your specimen is to APA approved standards, it's a Cochin, is what seems to keep being said over & over. From my research & reading on this topic, the key to do this as quickly as possible is to breed as many as possible so you have lots to chose from!