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Australian golden whistler
The Australian golden whistler (''Pachycephala pectoralis'') is a species of bird found in forest, woodland, mallee, mangrove and scrub in Australia (except the interior and most of the north)〔Ken Simpson, K., & N. Day. (1994). ''Field Guide to the Birds of Australia.'' 2nd edition. Christopher Helm. ISBN 0-7136-3930-X.〕 and in mountain forest in the Snow Mountains in the Papua Province of Indonesia.〔Beehler, B. M., T. K. Pratt, & D. A. Zimmerman (1986). ''Birds of New Guinea.'' Princeton University Press. ISBN 0-691-02394-8〕 Most populations are resident, but some in south-eastern Australia migrate north during the winter. Its taxonomy is highly complex and remains a matter of dispute, with some authorities including as many as 59 subspecies in the golden whistler (one of the highest numbers of subspecies in any bird),〔Clements, J. F. (2007). ''The Clements Checklist of the Birds of the World.'' 6th edition. ISBN 978-0-7136-8695-1.〕 while others treat several of these as separate species (as done here).
==Description==
The male has a bright yellow underside and nape, olive-green back and wings, a black head and chest-band, and a white throat. A notable exception is the Norfolk golden whistler (''P. p. xanthoprocta'') where the plumage of the male is female-like. In Australia females are overall dull brownish-grey, though some have yellowish undertail coverts. In females of the Balim whistler (''P. p. balim''), which is the subspecies in the Snow Mountains in the Papua Province of Indonesia, the entire underparts (except the whitish throat) are deep yellow. Both sexes have a black bill, dark legs and red-brown eyes.〔Boles, W. E. (2007). Golden Whistler (Pachycephala pectoralis). Pp. 421–423 in: del Hoyo, J., A. Elliot, & D. Christie. Eds. (2007). ''Handbook of the Birds of the World''. Volume 12: Picathartes to Tits and Chickadees. Lynx Edicions, Barcelona. ISBN 978-84-96553-42-2〕
Australian golden whistlers have a strong, musical voice.〔
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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