I have one cockeral (Black Sex-link) and six pullets (four RIR and two Black Sex-links) and we just incubated and hatched eight of their eggs. The hatch result was five black chicks (three of them had white spots on their heads and two didn't) and 3 were yellow, not reddish yellow but bright yellow. I have looked around and it seems I should have not gotten any yellow chicks from this and confused if they retain any of the sex-link characteristics or not. Anyone with any ideas on the yellow ones? This is our first time hatching eggs. We got the adults as chicks last year and managed to raise and keep all of them alive and loved it so we wanted to breed and hatch more.