Closely related to B. rhinoceros. Hybridization with latter reported both in wild and in captivity. Birds from Asian mainland have been separated as race homrai on basis of larger size, but variation seems to be clinal; SW Indian population described as race cavatus, but apparently inseparable from those in N of Subcontinent. Monotypic.
Western Ghats (SW India); S Himalayas (Garhwal and Kumaon) E to NC Myanmar, S China (W Yunnan) and Vietnam, and S to Malay Peninsula and Sumatra.
Food and feeding
Status and conservation
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