Hornbills (Bucerotidae)

Austen's Brown Hornbill (Anorrhinus austeni) - HBW 6, p. 491

French: Calao d’Austen German: Weißgesicht-Hornvogel Spanish: Cálao Pardo de Austen
Other common names: Assam/Brown(!)/White-throated Brown(-backed) Hornbill

Taxonomy: Anorhinus [sic] austeni Jerdon, 1872, Asalu, Cachar Hills, Assam.
Often separated with A. tickelli in genus Ptilolaemus; the two are often treated as conspecific, but differ in some plumage details and in presence or absence of sexual dimorphism in bill colour. Birds from Thailand and Indochina sometimes recognized as race indochinensis, but appear inseparable from other populations. Monotypic.

Distribution: NE India and S China to W, N & E Myanmar, N & C Thailand, Laos, W Cambodia and NW Vietnam.

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