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The violet budgerigar mutation is one of approximately 30 mutations affecting the colour of budgerigars. It is one of the constituent mutations of the violet variety. == Appearance== 〔 (The Facts about Violet Budgerigars ) 〕〔 Taylor and Warner (1986), p 73-83〕 The violet factor produces a visual effect in any bird which carries it. The effect depends on whether the violet factor is single or double and whether the dark and blue mutations are present. In total there are 18 visually different combinations of these three mutations. However, only three of these approximate to the colour specified by the visual violet exhibition standard. The World Budgerigar Organisation has established precise standards for some budgerigar body colours using the Pantone Codes. The colours of the recognised blue series varieties, including visual violet, are shown on the right. 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「Violet budgerigar mutation」の詳細全文を読む スポンサード リンク
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