I THINK his color would be called cuckoo red duckwing, but I won't say that for sure.
I was considering "Crele" as a color name, but I'm not entirely sure either.
Here is the person who will absolutely have the answers.
@NatJ
Unfortunately, not always.
If you bred the cuckoo rooster to the cuckoo hen, you'd end up with birds that look like mom and dad.
Yes, that is pretty much what I would expect: lots of black chicks with white barring, with various amounts of red/gold that range from little bits (like the hen) to large amounts (like the rooster).
I do not see any white barring on the chicks who have that rooster for father and a Mille Fleur d'Uccle mother. So that would mean the father only has one copy of the barring gene, not two. That would mean he will give barring to half his chicks, not all of them.
If the father gives barring to half his chicks (either gender), and the hen gives barring to her sons but not daughters, then the chicks will have four possibilities with barring:
--daughters with white barring
--daughters with no white barring
--sons with white barring (one copy of the barring gene)
--sons with white barring (two copies of the barring gene, showing more white than their brothers with one copy.)
If the hen is pure for the Extended Black gene (which causes the black base color), then all chicks will have a black base color, but will show various amounts of gold leakage. But if the hen is split with Extended Black and something else, then half the chicks might have a Duckwing-type base color (like the father, or a slightly different form in females: look at photos of "crele" hens for an example.) I don't know which is more likely.
If you bred the hen to a something like a Rhode Island Red rooster, I believe you'd end up with all black chickens, with males having cuckoo. So they'd be sexlinked with mom passing on the cuckoo only to her sons. However, she has some lancets, which means she may be mixed, which might throw off the sexlinking. But her black color (under the cuckoo) should pass and be dominant on all chicks. If I'm wrong Nat will correct me.... I hope.
You are a bit wrong about which part might be mixed. It will not mess up the sex-linking.
Yes, crossing the mother to a solid color rooster (not-barred) would give sons with white barring and daughters without. A hen cannot be mixed for barring. She only has one Z sex chromosome, so either she has it (and gives it to all her sons) or she does not. Her W sex chromosome has no barring, and goes to her daughters.
Yes, she might be a bit mixed in color, but it's the all-black part that may be mixed. So rather than giving a black base color to all her chicks, she might give black to half of them and something else to the other half. That would mean some chicks could be red (like the hypothetical Rhode Island Red rooster in your example, or the Mille Fleur-cross chicks in the example photo), or could have a duckwing-type color base (like the rooster in the photo.)
If you bred him with something else, you'd have some the dominant color of hen, some his color and still some that would have barring. But there would be no sexlinking and colors would be unpredictable.
Are you talking about the son in the photo? Or the one in your hypothetical Rhode Island Red example? I got a little lost.
The actual chick in the photo, black with white barring, is probably split for Extended Black (from the mother) and something else from the father (presumably duckwing), so he can pass either of those to his own chicks. He can give white barring to chicks of either gender, just like his father can.
In case anybody was wondering here's one offspring, looks just like the mother is far as barred patterning. The rest of these chicks are from different hens
Looks good
