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English Grey budgerigar mutation : ウィキペディア英語版 | English Grey budgerigar mutation The English Grey budgerigar mutation is one of approximately 30 mutations affecting the colour of budgerigars. It appeared briefly in the 1930s but was lost shortly after and until recently was believed to be no longer extant. However, the appearance of the Anthracite budgerigar mutation in 1998 with a seemingly identical appearance and identical genetic behaviour, insofar as can now be determined, suggests the mutation may have been regained. == Appearance == The English Grey variety is very similar in appearance to the Dominant Grey. The original reports described the English Grey in the Blue series as being slate grey with a dark grey to black rump, a white mask carrying black or almost black spots and dark grey, bordering on black, cheek patches, black and white wings and an intense black tail.〔 〕 When compared side by side with the Dominant Grey the English Grey was seen to be generally darker, with the cheek patches being particularly so. Both Dominant and English Greys were produced in the three shades of Dark,〔Rogers (1990) pp 91-92〕 with a noticeable though slight difference in shade. The English Grey Skyblue was stated to be darker than the Australian Grey Mauve.〔 The English Grey of the Green series was grey-green in colour and very like today's Grey-Green of the Dominant Grey 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「English Grey budgerigar mutation」の詳細全文を読む
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