Opaline inheritance
 

One of my pairs on eggs is a blue series opaline greywing hen with a blue series yf2 recessive pied male who is also possibly opaline and spangle. If he is not opaline, the males will all be split for opaline and none of the females will be opaline. If he is opaline, all of the females will be opaline, and so will all of the males. Is that correct?

Opaline mutation: https://www.****************/colorsguide.html#opaline.
Opaline mutation genetics: https://www.****************/gen_opaline.html

Yes. :)

Normal Cock = ZZ
Opaline Hen = ZoWZoW

Offspring Phenotype Results:
Males: 100% Normal
Females: 100% Normal

Offspring Genotype Results:
50% Male split for opaline (ZZo)
50% Female normal (ZW)

Source: https://www.****************/gen_opaline.html

Yes. :)

Opaline Cock = ZoZo
Opaline Hen = ZoWZoW
ZoZo x ZoWZoW = 50% ZoZo (opaline males) + 50% ZoWZoW (opaline females)

I understand what spangle looks like, but he is recessive pied with very few wing markings. :) An expert who has bred several recessive pieds told me he believed my bird to be spangled. But another expert remains unconvinced. So, I'll know when the babies get here. Which will be on Friday! Woo hoo!

Spangle can be difficult to see on some recessive pieds but on others is shows up clearly

Nev - you're the expert I was talking about that told me he was spangle. :D

ATV - your birds' markings are far more obvious than mine. He can be seen here.

https://talkbudgies.com/showthread.php?t=59642

Thanks everyone!