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Probabilities are averages across broad populations, so it’s most likely the probabilities won’t add up unless you bred the same pair over and over until you had a large enough sample size to get the same averages. So it’s very possible.

Additionally green-series is dominant to blue-series so it’s perfectly possible to get blue chicks from a green pair if both are split to blue, which is relatively common.

We’d love to see photos of your little ones if you get a chance!
 

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What we know based on the breeding results are that both of your birds are split to blue and that’s why you have a white/blue baby. If the baby is pied, in all likelihood the ino gene from the Lutino is covering pied mutation. As for having so many Lutino, it could also be possible that the male is split to ino and so increases your probability of ino chicks.
To clarify, Ino is sex-linked, so for any chicks to be ino at all the male must be split and the ino chicks are all girls, if neither of the parents are ino.
 

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Ooh! Completely forgot about that! It’s been awhile since I’ve looked into ino. I stand corrected. So both parents are split blue and dad is split ino and mom is ino and that is in fact the reason why there are so many ino chicks! So that’s why OP must be confused as to why so many are ino, because unknowingly the father carrying the gene would mean no ino babies. Thank you!
Yep, that's right. There's no way for chicks to be visually ino if only the mother is unless the father is also split! So since the father is split ino and the mother is ino, then you can get both male and female ino chicks whereas just having the ino mother would mean all males are split and none are visual.
 
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