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The Australian Pied budgerigar mutation is one of approximately 30 mutations affecting the colour of budgerigars. It is the underlying mutation of the Banded Pied variety. == Appearance == All pied budgerigars are characterised by having irregular patches of completely clear feathers appearing anywhere in the body, head or wings. These clear feathers are pure white in blue-series birds and yellow in birds of the green series. Such patches are completely devoid of black melanin pigment. The remainder of the body is coloured normally. File:Parakeet.JPG|Two young Australian Pieds, a Cobalt and a Yellow-face II Cobalt (?) File:Parakeets.jpg|Opaline Cobalt Australian Pied cock File:Budgerigar Norway -01.jpg|Cobalt Australian Pied hen File:Wellensittich Vogelpark.JPG|Cobalt Australian Pied cock with a Grey-Green cock The Australian Pieds are very similar in appearance to the Clearflight Pieds, with a nape spot, clear areas on the wings and a clear area on the breast. They differ from the Clearflight Pied in the nape spot, which is not always present, and in their feet, which are usually pink. But the main point of difference is in the clear area of the body, which in the Australian Pied is located in the middle or lower breast, with the upper breast being always normally coloured, so that there is a clear division between the mask and the breast, just as in normal birds. In the Clearflight Pied the clear area on the breast, if present, is almost always adjacent to and running into the mask. Australian Pieds often have larger clear areas on the wings than Clearflight Pieds, with all primaries and many secondaries often clear, but this cannot be taken as a distinguishing feature as the pied areas are very variable in extent in both mutations. Australian Pieds have the usual white iris ring when adult, distinguishing them clearly from Recessive Pieds, which have no iris ring at any age. In the Australian Pied the clear area often takes the form of a band running across the breast. Birds with such bands are highly prized, especially if the band is clear, sharp and symmetrical, and the feature is now quite common and distinctive due to selective breeding. Such birds comprise the Banded Pied variety. 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「Australian Pied budgerigar mutation」の詳細全文を読む スポンサード リンク
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