A general term for birds in the Psittacidae family of parrots. In the narrow sense, parrots refer to the large, crested species known as cockatoos, but birds in the Psittacidae family are generally referred to as parrots and parakeets. They have large heads, short necks and legs, stocky bodies, and short, thick beaks with the upper beak strongly curved downward. They have antidactyl feet, with two toes facing forward and the other two facing backward, and use these to grab food and bring it in front of their face to eat, or use their legs and beak, often called the "third leg," to climb trees. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
オウム目オウム科Psittacidaeの鳥の総称。狭義のオウム類は,英名でcockatooと呼ばれる大型で冠羽をもった種を指し,一般にはオウム科の鳥をオウム・インコ類と呼ぶ。頭が大きく,くびと脚が短いずんぐりした体つきをしていて,くちばしは短くて太く,上くちばしが強く下方に曲がっている。足は2本のあしゆびが前方,他の2本が後方を向いた対趾足(たいしそく)で,これで食物をつかみ,顔の前にもっていって食べたり,脚としばしば〈第3の脚〉と呼ばれるくちばしとを使って,木をよじ登る。
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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