Very cool mick hopes thos blues are nice and healthy...look after those ones!
Ben
how the ........
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Cando
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Don't you just love surprizes 
I had the same thing happen to me in my RH normal colony aviary. The parents and grandparents had had only normal redheads...and then out pops a blue 
Could be that there was some /blue somewhere in the line...though blues do happen in the wild as purely a mutation.
I think that since gouldians have been domestically bred for so long that breeders are quick to assume that they have /BB already in the lines.... but you never know. They have found both YB and BB in wild populations. Could be a spontaneous mutation..... you will just never know. Though I would think that having so many that it is most likely you purchased split to blues without realizing it and it just took a while...and the right pairing for it to show up.
4 out of 5 is a high percentage..... the 5th one may be split but may not be. The only way to know would to breed the bird to see if it throws blues. 2 goulds split to blue can produce blues, split to blues, and normals.
When you breed a blue to a normal then they will all be split to blue. And breeding a blue to a /blue you will get blues and /blues.
I had the same thing happen to me in my RH normal colony aviary. The parents and grandparents had had only normal redheads...and then out pops a blue Could be that there was some /blue somewhere in the line...though blues do happen in the wild as purely a mutation.I think that since gouldians have been domestically bred for so long that breeders are quick to assume that they have /BB already in the lines.... but you never know. They have found both YB and BB in wild populations. Could be a spontaneous mutation..... you will just never know. Though I would think that having so many that it is most likely you purchased split to blues without realizing it and it just took a while...and the right pairing for it to show up.
4 out of 5 is a high percentage..... the 5th one may be split but may not be. The only way to know would to breed the bird to see if it throws blues. 2 goulds split to blue can produce blues, split to blues, and normals.
When you breed a blue to a normal then they will all be split to blue. And breeding a blue to a /blue you will get blues and /blues.
Candace www.candoaviary.com
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finchbreeder
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bb (blue back) x bb = 100% bb G/b (green split blue) x G/b = 25% bb 50% G/b 25% 25% GG (green back)
G/b x GG = 50% GG 50% G/b but as genetics is worked on percentages the larger the numbers the more accurate the results, try flipping a coin where heads is the green gene and tails is the blue gene and that will be exactly the same thing
LML
G/b x GG = 50% GG 50% G/b but as genetics is worked on percentages the larger the numbers the more accurate the results, try flipping a coin where heads is the green gene and tails is the blue gene and that will be exactly the same thing
LML
LML