A Black Copper rooster over cuckoo hens produces a version of golden dark cuckoo roosters and black unbarred hens. Hens may show a little gold in the hackle.
Barred sex-linking works with almost any solid color with dark chickdown, if you want to identify sex at hatch. With marans, this rules out wheaten and white.
Barred sex-linking works with almost any solid color with dark chickdown, if you want to identify sex at hatch. With marans, this rules out wheaten and white.