A chicken from that mix of pure breeds should not have mottling. (I know you already said that. I'm just agreeing that mottling in him would be quite surprising.)Father of the first color changing hen is Dino. He's a crossing of Buff Orpington/Barred Rock X Buff Orpington/Australorp.
@NatJ
This is the only mottled hen(Bantam) I have. Do you think she'd work for crossing with Dino?
It depends on what you're trying to get from the cross.
If you want a double-check on whether he's got mottling, then yes she would probably work.
You say she looked like a Barred Rock as a chick, but do you know what she actually is? I'm pretty sure I see a beard, which of course is not a Barred Rock trait.Smarty Pants, Mother of the Chameleon Hen(I don't have chick pictures of her, but she looked exactly like a Barred Rock chick.)
IF my Chameleon hen is mottled, & bred to the mottled Split rooster, the results would be like this:
25% Solid Black Males, with leakage.
25% Solid Black Females, with leakage
25% Mottled Males, with leakage
25% Mottled Females, with leakage
Yes, that's what I would expect, if she's homozygous for mottling.