...They breed in the northern part of the Northern Hemisphere and migrate to the Southern Hemisphere in winter. The long-tailed skua ( S. longicaudus ) (illustration) and the black-tailed skua ( S. parasiticus ) are also similar birds to the skua, breeding in the Arctic and wintering in the Southern Hemisphere. All three species are seen passing through the coastal waters of Japan twice a year, in spring and autumn, but the majority of them are seen in spring. *Some of the terminology explanations that mention "arctic skua" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…北半球の北部で繁殖し,冬期には南半球に渡る。シロハラトウゾクカモメS.longicaudus(英名long tailed skua)(イラスト)とクロトウゾクカモメS.parasiticus(英名arctic skua)もトウゾクカモメによく似た鳥で,北極圏で繁殖し,南半球で越冬する。3種とも日本では春秋の2回,近海を通過するものが見られるが,春期にその数が多い。… ※「arctic skua」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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