Hitherto considered conspecific with H albocristatus, but differs in its black vs white ear-coverts (3); white tips of primaries, tertials and greater coverts (2); lack of cream plate at base of upper mandible below nares, but a pale broad line above this area (from and including nares to as far as, in some cases, point on bill below tip of casque; possibly only in males), which is black in albocristatus (2); larger size (from published figures#R) (at least 1). Monotypic.
S Nigeria E to W Uganda, S to N Angola.
Food and feeding
Status and conservation
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