Plain-pouched / Plain-pouched wreathed / Blyth's / Blyth's Wreathed / Burmese HORNBILL - with mouth open (Aceros subruficollis). Described as Vulnerable in the Red Data Book. Isolated populations in Myanmar, Thailand and Peninsular Malaysia. Inhabits mixed deciduous and dry evergreen and tropical wet forests. There is a small rapidly declining population owing to hunting and deforestation.