Sex-linked Mutations
01
The Cinnamon Cockatiels gene effects the melanin pigment by actually stopping the brown pigment being changed to grey or black. The amount of pigment doesn’t change at all just the colour of it. The brown colouring that remains should show no shades of grey or black in any form. This brown colour also extends to the eyes, beak, feet and legs as well as just the feathers.
02
The lutino gene is called a sex-linked recessive gene. It is one that affects the grey family of pigments in birds and is one of the easiest to recognise. Basically this gene successfully prevents the production of grey colours or ‘melanin’. So if you imagine a normal grey cockatiel that has all the grey washed out or taken away then you will see a lutino.
03
The Pearl Cockatiels gene does not have any visual affect on the colour pigments in the bird but instead it affects the distribution of the colours that are already present. It actually decreases the spread of the grey family of pigments (melanin) and increases the spread of the yellow pigments (psittacins). Individual feathers over most of a pearled bird will have more of the yellow family of pigments visible giving them a scalloped pattern.
04
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