Ah, interesting. Some of my chicks do have a few random spots. Well now I had to go and look up Belgian Mille Fleur d'Uccle and Golden Neck genetics!One copy can leave some black specks . Here is another color for you . In Millie Fleur the addition of dominant white turns it into Gold Neck as in Belgian D'uccle .Ah, I see. Now I know what you meant when you said above that dominant white is better at removing black than red. The black disappears completely, but the red just fades. So then, does it make a difference if there is one copy of dominant white vs two copies? (Is it complete dominance or incomplete?)This hen is based on black with one copy dominate white .