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The Antarctic tern (''Sterna vittata'') is a typical tern. It ranges throughout the southern oceans. It is very similar in appearance to the closely related Arctic tern, but is stockier, and the wing tips are grey instead of blackish in flight. It is, of course, in breeding plumage in the southern summer, when the Arctic tern has moulted to its non-breeding plumage (though this is not useful for separating it from another species, the South American tern). Breeding takes place from mid-November to early December. Chicks hatch from December to February. Skuas and jaegers are the primary predators of this bird's eggs and young. The total global population of this bird is around 140,000 individuals. ==Subspecies== There are six listed subspecies of the Antarctic tern.〔(【引用サイトリンク】title=''Coursers, noddies, gulls, terns, auks and sandgrouse'' )〕 *''S. v. tristanensis'' (Murphy, 1938) – Tristan da Cunha & Gough Island *''S. v. sanctipauli'' (Gould, 1865) – St. Paul & Amsterdam Islands. *''S. v. georgiae'' (Reichenow, 1904) – South Georgia, South Orkney & South Sandwich Islands *''S. v. gaini'' (Murphy, 1938) – South Shetland Islands, Antarctic Peninsula & nearby islands *''S. v. vittata'' (Gmelin, 1789) – Prince Edward, Crozet, Kerguelen, Bouvet & Heard Islands *''S. v. bethunei'' (Buller, 1896) – Stewart, Snares, Auckland, Bounty, Antipodes, Campbell & Macquarie Islands 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「Antarctic tern」の詳細全文を読む スポンサード リンク
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