What's the difference between budgerigar and golden egg?

Golden, the full name is golden protein lime wings, two colors, that is, gold with double gene gold face, double gene gold face, with any blue tiger skin, can produce a high proportion of gold face, which is more precious.

Gold is a golden rainbow, golden egg is a golden white stone, and double gold is a double gene golden rainbow.

Rainbow needs a yellow face gene, two gray wings genes and an opal gene to complete. Gold noodles are rare in China, and they are all in the hands of a few bird friends. Double gene golden face is white face with albumin and lime wings, and the next generation is yellow face.