I spent a while learning how the autosexing genetics work and found a lot of info about turning my favorite breed, the Welsummers, into an autosexing Welbar. Really, a Welbar is just a Crele Welsummer. There are Silver Duckwing Welsummers, but when the Crele were created they were given the name Welbar, I assume to ride the wave of popularity around autosexing "*bar" breeds.
This is a fantastic site to learn about the history and the current status in the UK: http://www.harislau.info/welbars
I used the breeding chart on that page to create them, and it also shows how to outcross back to Welsummers to enhance the genepool. Of all the autosexing breeds that I am aware of, only Welbars have this property of being easily outcrossed to their founding breed, you can't do this with Legbars, Rhodebars, or Bielefelders, but it's trivial with Welbars. A Welbar cockerel over any Welsummer pullet will produce 100% female Welbars. Cull any male chicks, put their father over them and you have a 100% autosexing Welbar flock in a single generation.
Okay...I think I gained insight into your breeding project today. Pretty AWESOME. I totally enjoyed all that information. It really gets your mind going....I read the site over and over.
Very cool.