I have AC roos and hens. Also a flock of mostly ameracauna and some cream legbars tossed in. Never thought to hatch out the blue eggs to see what I got. I do hatch the AC eggs though. There is one thing that may effect your cross results. AC can have 1 or 2 genes for the black coloring. If your chicks come out all black, you have a valuable roo with 2 genes for the black color. If you get a mixed bag of colors, black, white, grey, brown etc, your roo only has one gene for the black color and should not be used to breed other AC birds.