Why are parrots expensive in Feng Xuan, Bai Zi?

The most expensive parrot is the cockatoo. The white Feng Xuan parrot has white feathers, a pale yellow crest on its head and an ivory white mouth. The head, cheeks, mandible and upper throat are pale yellow, with orange round patches on cheeks and pink feet. Because its coat color is all white and quite rare, it is very precious. Bai Zi is a Feng Xuan parrot with a fixed color. It can also be said that the cultivation of new species is doubly precious.