Confused

[natamambo]

Ahah FB, that explains it. There is evidence that each of the Fallows (Scottish, Australian, German, Japanese etc) are not the same mutation genetically. It is possible that your breeder actually had two different strains of the fallow, these crossed will produce normals as the young are in fact split for each kind of fallow.

[Tiaris]

Also possible that he/she had two birds of different but similar looking mutations to start with eg Fawn and Cinnamon Star Finches, Recessive Dilute and Single factor European Yellow-backed Gouldian. There has also been much confusion (including on this forum) between Australian Yellow & European Yellow-backed Gouldians. Such matings would result in split birds looking like normals which if the breeder didn't know what they had to start with would have no idea re any possible splits.

[finchbreeder]

It's a thought. But as this is an Australian Breeder with records going back over 30years. It is one really big coincodence. (spelling) And this person is well known in the field as a genetics wiz who has been instrumental in strengthening a number of rare types. Yes you will see her at almost every nationals. But we all know genetics is a rollercoaster designed to surprise even the best of us.
LML