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Hornbills (Bucerotidae)

Southern Yellow-billed Hornbill (Tockus leucomelas) - HBW 6, p. 495

French: Calao leucomèle German: Südlicher Gelbschnabeltoko Spanish: Toco Piquigualdo Sureño

Taxonomy: Buceros leucomelas M. H. K. Lichtenstein, 1842, Vaal River, South Africa.
Sometimes considered to form a superspecies with T. flavirostris and in the past treated as conspecific, but differs in voice and bare-part colours. These two closely related to T. deckeni, and also, more distantly, to T. monteiri and T. erythrorhynchus, based on similar calls and behaviour, and DNA studies. Birds from Angola described as race elegans, on basis of smaller size, paler plumage and differences in bare-part colours, and those from E of range as parvior, on basis of smaller size, but degree of variation in all populations uncertain; furthe.. View all taxonomy...

Taxonomy: Buceros leucomelas M. H. K. Lichtenstein, 1842, Vaal River, South Africa.
Sometimes considered to form a superspecies with T. flavirostris and in the past treated as conspecific, but differs in voice and bare-part colours. These two closely related to T. deckeni, and also, more distantly, to T. monteiri and T. erythrorhynchus, based on similar calls and behaviour, and DNA studies. Birds from Angola described as race elegans, on basis of smaller size, paler plumage and differences in bare-part colours, and those from E of range as parvior, on basis of smaller size, but degree of variation in all populations uncertain; further study needed. Monotypic.

Distribution: SW Angola and Namibia E to S Malawi, W Mozambique and N South Africa.

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