Update ,I think there was a humidity issue, 2 that didn't hatch were light color, so 5 light and 4 dark. The wings have different colour coming through now
Update, 4 more chicks hatched, 2 dark with gold around the eyes and chin, a pale one with a black mohawk and a very dark one with no gold and much fatter toes and lower leg
Wondering if these could be sex links , Father is buff orp, Mother is black Australorp. I think the brown one with gold chin is a hen, and the two pale ones are roosters