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The wreathed hornbill (''Rhyticeros undulatus''), also known as the bar-pouched wreathed hornbill, is a species of hornbill found in forests from far north-eastern India and Bhutan, east and south through mainland Southeast Asia and the Greater Sundas, except Sulawesi. It is long. Males weigh from to , and females weigh from to .〔(Oakland Zoo )〕 Both sexes are similar to the respective sexes of the closely related plain-pouched hornbill, but the wreathed hornbill can be recognized by the dark bar on the lower throat (hence the alternative common name, ''bar-pouched'').〔Rasmussen, P. M. (2000). ''(A review of the taxonomy and status of the Plainpouched Hornbill Aceros subruficollis. )'' Forktail 16: 83-86〕 Though commonly considered monotypic, evidence suggests some geographical variation in the appearance.〔 ==Gallery== File:Rhyticeros undulatus -Bali Zoo, Indonesia -female-8a.jpg|Female at Bali Zoo, Indonesia File:Wreathed Hornbill (Rhyticeros undulatus) in TMII Birdpark.jpg|Male at Taman Mini Indonesia Indah Birdpark, Jakarta, Indonesia File:Rhyticeros undulatus - Jardin d'oiseaux tropicaux - DSC04925.JPG|Male at the Jardin d'oiseaux tropicaux, France Image:Wreathed Hornbill (Aceros undulatus) possibly on Semal (Bombax ceiba) at Jayanti, Duars, West Bengal W2 IMG 5784.jpg|An adult male left and an immature right. In the Buxa Tiger Reserve in Jalpaiguri district of West Bengal, India. Image:Wreathed Hornbill (Aceros undulatus) at Jayanti, Duars, West Bengal W IMG 5789.jpg|Males in flight in the Buxa Tiger Reserve in Jalpaiguri district of West Bengal, India. File:Rhyticeros undulatus -Atlanta Zoo, Georgia, USA-8a.jpg|Male at Atlanta Zoo, USA File:Wreathed Hornbill in Wild.jpg|in Ultapani Forest Reserve, Assam, India ==References== * (BirdLife Species Factsheet. ) 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「Wreathed hornbill」の詳細全文を読む スポンサード リンク
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