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Sylvioidea
Sylvioidea is a clade of passerine birds. It is one of at least three major clades within the Passerida along with the Muscicapoidea and Passeroidea. It contains about 1300 species including the Old World warblers, Old World babblers, swallows, larks, bulbuls and perhaps the tits. Members of the clade are found worldwide but fewer species are present in the Americas.
==Systematics==
The superfamily Sylvioidea was first proposed in 1990 in the Sibley–Ahlquist taxonomy of birds.〔Sibley, C.G. & Ahlquist, J.E. (1990): ''Phylogeny and Classification of Birds. A Study in Molecular Evolution''. Yale University Press, New Haven and London.〕 More recent studies have failed to support the inclusion of some families such as the treecreepers, wrens and allies but do support the addition of the larks.〔Alström, Per; Ericson, Per G.P.; Olsson, Urban & Sundberg, Per (2006): "Phylogeny and classification of the avian superfamily Sylvioidea". ''Mol. Phylogenet. Evol.'' 38(2): 381–397. PMID 16054402 (PDF fulltext )〕
Some of the families within the Sylvioidea have been greatly redefined. In particular, the Old World warbler family Sylviidae and Old World babbler family Timaliidae were used as wastebin taxa and included many species which have turned out not to be closely related. Several new families have been created and some species have been moved from one family to another.〔Boyd, John H. (2010): (Sylvioidea ), ''(Aves — A Taxonomy in Flux )''. Accessed 7 January 2010.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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