#psittacofulvin

[amber-tortoiseshell]

PKS - Polyketide synthase

An enzyme, part of the production of a unique yellow pigment called psittacofulvin found in the feathers of parrots.

Alexandrine parakeet

blue (two mutations)

Inheritence: recessive.

image source

Rose-ringed parakeet

blue (two mutations)

Inheritence: recessive.

image source

Eclectus parrot

blue

Inheritence: recessive.

blue female and male

Galah

blue (two mutations)

Inheritence: recessive.

image source

[amber-tortoiseshell]

MuPKS (LOC101880715)

This is an uncharacterized polyketide synthase.

Budgerigar, Fischer's lovebird, Yellow-collared lovebird

blue (the exact same mutation, but probably happened twice independently, once in budgerigars and once in lovebirds)

Inheritence: recessive.

budgerigar, Fischer's lovebird, yellow-collared lovebird

[amber-tortoiseshell]

ALDH3A2 - Aldehyde Dehydrogenase 3 Family Member A2

This gene encodes an enzyme that catalyzes the oxidation of fatty aldehydes to carboxylic acids.

Dusky lory

red

Inheritence: recessive.

image source