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A white-faced cockatiel (sleeping) White-faced cockatiels have their psittacofulvin (yellow and orange) pigments deactivated by the blue gene, resulting in cockatiels with absolutely no psittacofulvin pigments whatsoever. This is a result of the same genetic mutation as the genuine Blue genetic mutation in all typical parrot and parakeet species.
Cockatiel colour mutations can become even more complex as one bird can have multiple colour mutations. For example, a yellow lutino cockatiel may have pearling – white spots on its back and wings. This is a double mutation. An example of a quadruple mutation would be cinnamon cockatiel with yellowface colouring with pearling and pied ...
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 cockatiel is by far the cockatoo species most frequently kept in captivity. Among U.S. bird keepers that participated in a survey by APPMA in 2003/04, 39% had cockatiels, as opposed to only 3% that had (other) cockatoo species. [116] The white cockatoos are more often encountered in aviculture than the black cockatoos. [117]
The Pied cockatiel is the first mutation of cockatiel colour genetics, with a mostly grey to light-yellow and white feathers and orange cheek patches.. Pied cockatiels have large, random blotches of colour on their bodies, after the "normal grey" or "wild type" of a cockatiel's plumage is primarily grey with prominent white flashes on the outer edges of each wing.
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]
It all began with the normal grey cockatiel as the wild type colour, the mutations started with the captive home breeding, It took about 100 years for the first mutation [3] to evolve, from the first captive breeding of cockatiels which was in France in the 1850s till 1951 which known the Pied cockatiel mutation as first mutation colour to be established in the United States. [4]
Gulls are typically gray or white, often with black markings on the head or wings. They have stout, longish bills and webbed feet. Terns are a group of generally medium to large seabirds typically with gray or white plumage, often with black markings on the head. Most terns hunt fish by diving but some pick insects off the surface of fresh water.