@PD-Riverman The only cross I've done previously is with the silkie x japanese bantam. I didn't know at the time that legs would give me the sex but out of 5 I had 4 with dark legs and one with yellow. Ended up with 4 girls and a boy. Boy's name is Mr. Obvious simply because he was obvious at 2/3 weeks.
My research says any barred female with a non barred male produces black sex links. Boys with barring gene so the white dot, girls without so no dot.
Anyone feel free to jump in and correct anything as I'm not experienced at all with any of this. Just going off what I've read.
I never done any barred breeding other than Barred rock rooster or breeding for black sex-link. True True bred black sex-links --male has a spot and female does not. Barred crossed with other breeds---will not produce black sex-links but I have no idea what the outcome would be. Adult Sex-links will not breed true sex-links----so I did not know where you were with that as far as leg color etc.