"Budgerigars are naturally green and yellow with black, scalloped markings on the nape, back and wings, but have been bred in captivity with colouring in blues, whites, yellows, greys and even with small crests."
"The feathers of most
parrot species, including budgerigars, contain both a black type of
melanin named
eumelanin along with a basic yellow
pigment named
psittacofulvin (psittacin for short). Some other parrot species produces a third pigment named advanced-psittacin which enables colour & tones ranging from oranges, peaches, pinks to reds. When these feathers are exposed to a white light source, such as
sunlight, only the blue part of the
spectrum is reflected by the
eumelanin granules. This reflected blue light passes through the yellow pigment layer, resulting in the green colouration known as
lightgreen in only the budgerigar and/or
green in any other naturally green coloured parrot species."
"As is true with all animal species, colour mutations occur in captivity as do in the wild."
https://en.wikipedia.org/wiki/Budgerigar
https://en.wikipedia.org/wiki/Budgerigar_colour_genetics
Vikipedi'de dendiğine göre yeşil renk doğada bulunan renkmiş. İnsanlar tarafından yakalandıklarında üretim sırasında mavi, beyaz, gri renk mutasyonlarının kazanımları sağlanıyormuş....
Neyse; uzun lafın kısası, uzun yaşamın sırrı bakım, özgürlük ve ilgiden geçiyor
