Affinities unclear; could be separated in a monotypic genus Cranorrhinus (sister to Rhyticeros) on account of divergent phenotype#R#R; further analyses required. Previously considered to belong in the species-group centred on Rhabdotorrhinus leucocephalus (which see). Birds from Muna and Butung, smaller and shorter-billed, proposed as race brevirostris, but variation clinal. Monotypic.
Sulawesi, and offshore islands of Lembeh, Togian Is, Muna and Butung.
Food and feeding
Status and conservation
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