นกหงส์หยก color

หน้าเหลือง

Budgerigar mutation of the blue series that leaves some yellow: a yellow mask, a tinge of yellow at the edge of the markings and on the tail, the body otherwise blue, cobalt, mauve, violet or gray (WBO). Mutant 1 is lemon yellow; mutant 2 buttercup and goldenface deeper still, their single factors suffusing the body to a sea-green. Compare WHITEFACE.

No นกหงส์หยก breed lists หน้าเหลือง yet. No club standard describes it.