x2Thanks for the reminder about the links, but I'm not asking about Germany. I'm asking about North American birds. Who here has developed a line that produces siblings that will produce properly laced male and female birds both meeting the SOP. I want of learn how they did if, what lines, what did they look for. How do you do that without selecting for roos or females. I would love to see birds from someone on the forum who has birds with the genetics to do this. If the Germans can do it, do we know for sure we even have that combination of genes in our lines anymore. Do we know for sure two pens were nog used. Maybe the ability was bred out selecting for something else. I love simple punnet squares but beyond that I'm visual. I want to see what is here.