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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク American herring gull ： ウィキペディア英語版 American herring gull The American herring gull or Smithsonian gull (''Larus smithsonianus'' or ''Larus argentatus smithsonianus'') is a large gull which breeds in North America, where it is treated by the American Ornithologists' Union as a subspecies of herring gull (''L. argentatus''). Adults are white with gray back and wings, black wingtips with white spots, and pink legs. Immature birds are gray-brown and are darker and more uniform than European herring gulls, with a darker tail. It occurs in a variety of habitats including coasts, lakes, rivers and garbage dumps. Its broad diet includes invertebrates, fish, and many other items. It usually nests near water, laying around three eggs in a scrape on the ground. ==Taxonomy== It was first described as a new species in 1862 by Elliott Coues based on a series of specimens from the Smithsonian Institution. It was later reclassified as a subspecies of the herring gull (''Larus argentatus''). The taxonomy of the herring gull group is very complicated and much is still controversial and uncertain. A 2002 study suggested that the American herring gull is not closely related to European herring gulls, belonging instead to a separate clade of gulls.〔Sangster, George; J. Martin Collinson; Alan G. Knox; David T. Parkin & Lars Svensson (2007) (Taxonomic recommendations for British birds: 4th report ), ''Ibis'', 149 (4): 853-857.〕 Several authorities such as the Association of European Rarities Committees and British Ornithologists' Union now recognize it as a separate species. The BOU also includes the East Siberian gull (''Larus vegae'') of north-east Asia within the American herring gull.〔 The American Ornithologists' Union has not adopted the split and continues to treat the American herring gull as a subspecies of ''Larus argentatus''. 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「American herring gull」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.