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The normal grey or wild-type cockatiel is one whose colour genes have no mutations. A normal grey cockatiel's plumage is primarily grey with prominent white flashes on the outer edges of each wing. The face of the male is yellow or white, while the face of the female is primarily grey or light grey, and both genders feature a round orange area ...
The colour in cockatiels is derived from two pigments: melanin (which provides the grey colour in the feathers, eyes, beak, and feet), and psittacofulvins (which provide the yellow colour on the face and tail and the orange colour of the cheek patch). The grey colour of the melanin overrides the yellow and orange of the psittacofulvins when ...
However, bird breeders can breed for certain traits, and they have been breeding for different color mutations in cockatiels since the 1940s. [1] The lutino cockatiel mutation was the second cockatiel mutation to be established in the United States, the first being the pied cockatiel mutation in 1951. [2]
The "albino cockatiel" is not a true albino, it is a combination of a "white-faced cockatiel" and a "Lutino cockatiel". The "Whiteface gene" removes all the yellow and orange that would be present in a Lutino. and the "Lutino gene" removes all the black and grey. The result is an all white cockatiel with red eyes. [4]
When a bronze fallow cockatiel is born, it has a pale pink eye. As they mature ,the eye color slightly darkens, a bronze fallow cockatiel's eyes are lighter than a Lutino cockatiel, whose red eye is darker. A yellow wash may emerge across the body. [2] One feature is unlike other mutations. Male bronze fallow cockatiels differ from females.
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The four pigments in a bird's cone cells (in this example, estrildid finches) extend the range of color vision into the ultraviolet. [1]Tetrachromacy (from Greek tetra, meaning "four" and chroma, meaning "color") is the condition of possessing four independent channels for conveying color information, or possessing four types of cone cell in the eye.
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