Black copper pullet. Golden cuckoo roo, but he might have more red then gold in the hackle. I would think, iv never done that cross I'm just going off genetics. But the roo will be Heterozygous for Barred Bb so he will be dark barred like the hen not the light color barred you see in most...
Yes it would still make a sex link because barred is dominate and a sex link treat. A golden cuckoo is a barred base with ER and sex link trait for gold s. Buffs are s and ee. So buff rooster ss, ee. Marans hen ER,B, s. I would think roosters would be barrrd with more gold bleeding through, and...