Nice surprise to get a yellow. Rudolph must be split for yellow, which I didn't know.
Yellow is a autosomal recessive mutation so both cocks and hens can be split for it. Now as goldie is yellow the normal green chick will therefore be split for yellow. Goldie is also opaline, which reduces the melanins (dark stuff) and increases the psittacins (yellow stuff). In a green bird, opaline gives a patchy light green and greeny-yellow bird. Opaline in a yellow bird gives the 'golden' yellow. Opaline also increases the distribution of red pigments and by selective breeding has produced redder birds.
Rudolph Goldie
Goldie and Rudolph are both red fronted , which again is the result of selective breeding rather than a true colour mutation. Normally hens only get a red belly, but when combined with opaline as in Goldy's case, the hens also get a full red front like the red-fronted males.
Opaline is a sex-linked mutation and it is possible that Rudolph is split for this also. It's going to be interesting to see how much red the chicks inherit.
they are very cute. At least some happy news on a sad day. I hope you continue keeping some form of grasskeets.
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