A wide ranging series of articles by me and other contributors on the biology and genetics of plumage colour and pattern in the parrots. A comprehensive choice of other sites dealing with various aspects of our chosen subject.
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Inte Onsman confirms that two new varieties of Indian Ringneck have been identified. Presently largely confined to the Netherlands, these are the sex-linked Opaline and the Misty, a dominant dilute variety. There are reports from Australia of Indian Ringnecks which carry varying amounts of orange colouration. No consistent pattern is apparent and the causes are not yet clear. A discussion of this article is in preparation.