Yellow-throated Sparrow - Yellow-throated Sparrow

Japanese: キコキンチョウ - きこきんちょう
Yellow-throated Sparrow - Yellow-throated Sparrow

...The two central tail feathers are long and pointed. There are three types of forehead and face: black, red, and yellow. They are called the black finch, the red finch, and the yellow finch, respectively. However, it is said that these are genetic mutations, and that the three types can occur in one litter. However, the black type outnumbers the red type by about 3:1, and the yellow type is rare.

*Some of the terminology that refers to "Kikokincho" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…中央2枚の尾羽は長く,先がとがっている。額と顔の色は黒いもの,赤いもの,黄色のものの3型があり,それぞれクロコキンチョウ,アカコキンチョウ,キコキンチョウと名付けられているが,これらは遺伝的な変異で,1腹の雛から3型が生ずることもあるといわれる。しかし,約3:1の割合で黒型が赤型より多く,黄型はまれである。…

※「キコキンチョウ」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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