BlueTheBrahma’s thread!

[BlueTheBrahma]

Ty!

More questions

The one closest to me is a golden cuckoo (hen) x BCM (roo).

The one in the back is a "golden" but their mom is more grey w/ no gold hackling. The barring is throwing me off too, and my wife thinks something is wrong w/ the moms or they aren't true cuckoo. I'll have to cross post the mom's of the two I have cause I also think they are roosters since the barring gene should follow males.

Both moms are dark brown egg layers from what I can tell and feathered feet + light colored shanks.

View attachment 4183511

Hens are never true cuckoo in the sense that they only have one copy of the barring gene. They can never have two copies due to their chromosomes.
As a result, their sons will only inherit one. They may have a second copy from their father, if not, they will only be single barred.


A golden cuckoo may lack golden hackles in the way a black copper may be mostly black. If the copper is restricted by melanisers etc, you get a more black bird.

I also have a feeling that the guy in the back may be extended black rather than birchen based.
A picture of the parents may help.

 

[Pumperkinz]

@BlueTheBrahma
Dad is in the front here (BCM) he does have some I'd say gold leakage. Gold Cuckoo (Above) and the other gold cuckoo I don't have a real great pic on but she's in the back behind the rooster to the right just blurry. She's just got no gold hackles. If it stops raining I'll send another post.

 

[BlueTheBrahma]

View attachment 4183791
View attachment 4183792@BlueTheBrahma
Dad is in the front here (BCM) he does have some I'd say gold leakage. Gold Cuckoo (Above) and the other gold cuckoo I don't have a real great pic on but she's in the back behind the rooster to the right just blurry. She's just got no gold hackles. If it stops raining I'll send another post.

You have one GCM hen with high gold expression and one with low. An SOP correct bird is kind of in the middle.
It’s very possible that the one with less gold is split for extended black with either birchen or wheaten. (E/E^R or E/E^Wh) That’s why one cockerel is true birchen patterned GCM, the other is a bit darker, as the dark one inherited the E allele.

This is only speculation, other alternatives include strong melanisers in the darker hen.

Are you planning to develop a GCM line?