Need help with breed, is she really a Sapphire Olive Egger

[Susan1981lic]

The OP's bird has 'cuckooing'.
The majority of Olive Eggers will presumably be Marans × Cream Legbar, (dark brown eggs × blue eggs making the olive eggs) so I would imagine the cuckooing comes from the Cuckoo Marans parent.

You're right that bird is similar.

Excuse my ignorance but what is cuckooing?

 

[The Happster]

Please Google it
Cuckooing is like barring, but more smudgy and less regular.

 

[TheOddOneOut]

If she did lay that egg, then she may be barred rock. Olive egger's lay zombie green eggs and barred rock, cream colored.

She has a crest.

 

[TheOddOneOut]

Excuse my ignorance but what is cuckooing?

It’s the pattern. Basically smudged barring.

 

[Susan1981lic]

This is what she looked like as a chick.

 

[Finnie]

I guess it really depends on what mix they used to make the Olive Egger. They need to use a dark brown layer and a blue layer. But if they use a blue layer that is not 100% positively homozygous for blue egg genes, then about 50% of the offspring will fail to get a blue egg gene. Then you are left with a non-olive egger. For the egg to be cream or light brown, that tells me they didn’t even make sure to use a homozygous DARK brown layer either!

This would be pretty common if someone is making “Olive Eggers” by breeding one Olive Egger to another. It would take a lot of careful selection to breed out the unwanted recessive egg color genes.

 

[Susan1981lic]

I guess it really depends on what mix they used to make the Olive Egger. They need to use a dark brown layer and a blue layer. But if they use a blue layer that is not 100% positively homozygous for blue egg genes, then about 50% of the offspring will fail to get a blue egg gene. Then you are left with a non-olive egger. For the egg to be cream or light brown, that tells me they didn’t even make sure to use a homozygous DARK brown layer either!

This would be pretty common if someone is making “Olive Eggers” by breeding one Olive Egger to another. It would take a lot of careful selection to breed out the unwanted recessive egg color genes.

Thank you