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helmeted honeyeater
The helmeted honeyeater (''Lichenostomus melanops cassidix'') is a passerine bird in the honeyeater family. It is a distinctive and critically endangered subspecies of the yellow-tufted honeyeater, that exists in the wild only as a tiny relict population in the Australian state of Victoria, in the Yellingbo Nature Conservation Reserve. It is Victoria’s only endemic bird, and was adopted as one of the state’s faunal emblems in 1971.
==Taxonomy==
The helmeted honeyeater is one of four subspecies of the yellow-tufted honeyeater. The taxonomic history of ''L. m. cassidix'' is complicated. Schodde and Mason〔Schodde & Mason (1999).〕 affirm its subspecific status but suggest that there is intergradation across eastern Victoria and south-eastern New South Wales between it and the nominate subspecies ''L. m. melanops''. This conclusion disallows ''L. m. gippslandicus'' as a taxon, and suggests that ''cassidix'' occurs more widely through West Gippsland than is currently recognised. However genetic research, conducted on behalf of Victoria's helmeted honeyeater recovery team by Hayes,〔Hayes (1999).〕 does not support Schodde and Mason’s subspecific arrangement, but confirms the distinctiveness of ''cassidix'' both as a taxon and the limits of its current geographic range to the Yellingbo area.〔Menkhorst (2008b), p.3.〕
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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