Hornbills (Bucerotidae)

Rufous-headed Hornbill (Aceros waldeni) - HBW 6, p. 512

French: Calao de Walden German: Waldenhornvogel Spanish: Cálao Grande de Panay
Other common names: Writhe-billed Hornbill(!), Panay/Visayan Wrinkled Hornbill

Taxonomy: Craniorrhinus [sic] waldeni Sharpe, 1877, Panay, Philippines.
Sometimes placed in genus Rhyticeros. May form a superspecies with A. cassidix, A. corrugatus and A. leucocephalus. Often considered conspecific with A. leucocephalus, but differs in plumage, bare parts, and in degree of sexual dimorphism in colour of facial skin. Monotypic.

Distribution: Panay, Guimaras and Negros (C Philippines).