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The bearded bellbird (''Procnias averano'') also known as the campanero or anvil-bird, is a passerine bird which occurs in tropical northern South America. There are two subspecies; the nominate taxon, ''P. a. averano'', in northeastern Brazil and ''P. a. carnobarba'' in Venezuela, Trinidad, extreme northeastern Colombia, western Guyana and far northern Brazil. ==Description and behaviour== This cotinga occurs in humid forests and woodland. It is mainly resident, but some populations take part in altitudinal migrations; breeding at altitudes of up to and spending the non-breeding season in the lowlands. It is a localised and uncommon bird in Venezuela, but is fairly common in Trinidad. The nominate Brazilian race is relatively rare due to extensive habitat destruction in its range and heavy trapping for the cagebird trade, and as such is considered "vulnerable" by Brazilian environmental authority (IBAMA).〔http://www.diagnostico.org.br/especies/especie.2006-05-01.3989191239〕 Like other cotingas, the bearded bellbird has a broad hooked-tipped bill, rounded wings, strong legs and a striking appearance. The male is approx 28 cm 11 in long, and weighs . His plumage is white or greyish-white apart from the black wings and warm brown head. He sports a grotesque "beard" of un-feathered, black stringy wattles.〔Snow (2008), p. 132.〕 The female is smaller, at approx. and . Her upperparts are olive-green (duskier on the head), most of the underparts are yellow streaked with green, and the vent is pure yellow. She lacks the facial wattles ("beard"). Both sexes have dark eyes, a black bill and grey to black legs. These arboreal bellbirds feeds entirely on fruit and berries, mainly taken on the wing. Lauraceae and Burseraceae are particularly favoured, and the young are fed regurgitated Lauraceae by the female. The males' advertising calls are a very loud dull ''Bock'' repeated every few seconds and a somewhat less loud, metallic hammering ''tonk-tonk-tonk-tonk''. It sounds like a hammer rapidly hitting an anvil and is repeated 20-30 times.〔ffrench, (1991) p. 188.〕 Additionally, a number of regional calls are known, e.g. an unmusical, almost hissing, ''bisset'' in southern Venezuela and a disyllabic ''teek-terong'' in northern Venezuela. Apparently, the last mentioned call is no longer heard in Trinidad. The female is essentially silent. 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「Bearded bellbird」の詳細全文を読む スポンサード リンク
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