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The name marsh tern refers to terns of the genus ''Chlidonias'', which are typically found in freshwater marshes, rather than coastal locations. There are four species: * Black tern, ''Chlidonias niger'' (or ''nigra'') * White-winged tern or white-winged black tern, ''Chlidonias leucopterus'' (or ''leucoptera'') * Whiskered tern, ''Chlidonias hybrida'' (or ''hybridus'') * The Black-fronted tern, ''Chlidonias albostriatus'' (formerly ''Sterna albostriata'') is now also recognized to belong to this genus (Bridge ''et al.'', 2005). Notice the hesitation in the gender of the epiteth of the scientific names, as they are usually masculine (''albostriatus, leucopterus'' or ''niger''), but in the case of the Whiskered tern is mostly used as feminine (''hybrida''), maybe from the influence of the previous gender used, ''Sterna''. The black-bellied tern (''Sterna acuticauda'') and the white-cheeked tern (''Sterna repressa'') might also be placed in ''Chlidonias''. The scientific name derives from the Greek for "swallow-like". ==References== *Bridge, E. S.; Jones, A. W. & Baker, A. J. (2005): A phylogenetic framework for the terns (Sternini) inferred from mtDNA sequences: implications for taxonomy and plumage evolution. ''Molecular Phylogenetics and Evolution'' 35: 459–469. (PDF fulltext ). 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「marsh tern」の詳細全文を読む スポンサード リンク
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