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The Dark budgerigar mutation is one of approximately 30 mutations affecting the colour of budgerigars. It is part of the genetic constitution of the following recognised varieties: Dark Green and Olive in the green series and Cobalt, Mauve and Violet in the blue series. == Appearance == Budgerigars carrying the Dark factor are identical to the wild-type Light Greens or Skyblues in every respect except body colour and tail feathers. The body is darker in Dark Greens and Cobalts and darker still in Olives and Mauves, and the long tail feathers are darker in proportion. All these varieties have normal violet cheek patches. The Dark Green's body colour is a rich shade of forest green, and Cobalt's a deeper blue, approximating to azure. The Olive is a rich olive similar in shade to a Grey-green, but it may be easily distinguished by its cheek patch, which is violet in the Olive and grey in the Grey-green. The Mauve is a dull purplish gray, quite different from the brilliant Violet and Cobalt. In nest feather the Mauve is almost grey, but the violet cheek patch, although somewhat darker than in other varieties, identifies it as a Mauve. The Violet Cobalt (a composite of the Blue, Dark and Violet mutations) is a brilliant shade of violet, rather similar but not quite as deep as and rather bluer than the wild-type violet cheek patches. The World Budgerigar Organisation has established precise standards for certain budgerigar body colours using the Pantone Codes, as shown to the right. File:Melopsittacus_undulatus_male.jpg|Light Green cock File:Budgie001.jpg|Dark Green cock File:Zebrabudgie.jpg|Olive cock Image:Bobbybudgie.jpg|Olive cock File:Melopsittacus undulatus -blue -pet-8.jpg|Skyblue cock File:Blue male budgie.jpg|Cobalt cock 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「dark budgerigar mutation」の詳細全文を読む スポンサード リンク
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