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The German Fallow budgerigar mutation is one of approximately 30 mutations affecting the colour of budgerigars. At least three types of Fallow, the German, English, and Scottish, all named after their country of origin, have been established, although none of these types is common. They are superficially similar, but adult birds may be distinguished by examining the eye. All have red eyes, but the German Fallow shows the usual white iris ring, the eye of the English Fallow is a solid red with a barely discernible iris and the iris of the Scottish Fallow is pink. In an attempt to regularise the names of mutations across all psittacines, it has been proposed〔 〕 by Inte Onsman that the name ''Bronze Fallow'' be adopted for this mutation. == Appearance == In most respects German and English Fallows are very similar. Both resemble Cinnamons, but differ in having a much weaker body colour, which results in a rather attractive mustard-yellow breast shading to green on the rump (blue in the blue series).〔 〕 The depth of the green or blue suffusion varies in individual birds, but is always more intense towards the vent and on the rump. The throat spots, head and neck striations, and wing markings are a medium brown on a yellowish ground. The cheek patches are a lighter and duller shade of violet than normal. Cocks have a greyish-purple rather than the usual blue cere. The feet and legs are pink and the beak orange. The most obvious distinction from Cinnamons is the red eye, which in the German Fallow is a deep ruby-red, like an Ino's but a shade darker, with the usual white iris ring when adult.〔〔Taylor and Warner (1986), p 84〕 The English Fallow has an eye of a clear bright red, without a white iris ring—a beautiful and attractive feature.〔 On hatching, young English Fallows have red eyes like Inos but young German Fallow chicks have plum-coloured eyes rather like Cinnamon chicks.〔 The Dark mutation deepens the body colour of the Fallow, but the difference between the Light Green, Dark Green and Olive Fallow is far less than that between the normal Light Green, Dark Green and Olive. The Olive Fallow is "a beautiful rich golden orange shade, and the chest is deep yellow olive — a truly lovely colouring", says Cyril Rogers in (''The Fallows'' ). Fallow Greys and Grey-Greens generally have darker wing markings. Opaline by itself lightens the body colour of Fallows〔Taylor and Warner (1986), p 86〕 ((see )), and in combination with Cinnamon produces a bird very similar in appearance to a Lacewing (i.e. a Cinnamon Ino), with virtually no body suffusion. When the German Fallow mutation is combined with the Cinnamon and Dilute mutations, the resulting Cinnamon Dilute German Fallow is visually very similar to an Ino. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「German Fallow budgerigar mutation」の詳細全文を読む スポンサード リンク
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