…All species have white, green, blue, or purple plumage, some with long tails, some with crests, and are generally beautiful birds. The smallest of the Corvidae is the beautiful Little Blue Jay, Cyanolyca nana , found in Mexico, at about 20 cm in length, while the largest is the long-tailed Crested Jay, Calocitta formosa , found in Central America, at about 70 cm in length. Many species nest more or less in groups during the breeding season, and generally live in flocks during the non-breeding season. … *Some of the terminology that refers to the Crested Jay is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…どの種も白色,緑色,青色,紫色などの羽毛をもち,尾の長い種や冠羽のある種もあり,一般に美しい鳥である。カラス科の中でもっとも小さいのはメキシコに分布する美しいヒメアオカケスCyanolyca nanaで全長約20cm,最大は中央アメリカに分布する尾の長いカンムリカケスCalocitta formosaで全長約70cm。繁殖期には多少とも集団になって営巣する種が多く,非繁殖期には一般に群れになって生活している。… ※「カンムリカケス」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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