Loved the video, loved the birds, love birds that are different.
Ko Shamo from the way they are must be in the make up of Cornish game somewhere. My second Cornish game, dark girl, "Indi Too", has lots of similarities, v.large legs, in Indi's case bright yellow and squat, same look about the head. Indi is heavy, huge across the chest and always busy and noisy. Love her to bits. She was hatched and grew up with Big Rube and the Croads (sounds like a band,) also a silver partridge Pekin who was her bessy mate for all of their chickhood.
Best of luck with your bid, ebay?
Hope for a huge hatch for you. Cornish do not do very well, don't lay well, mate well because of their shape, I've only ever hatched a single egg, not great fertility because of their shape problems. I would love to have a dozen!