Supriya Ghosh (Editor)


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Kingdom  Animalia
Order  Bucerotiformes
Scientific name  Aceros
Rank  Genus
Phylum  Chordata
Family  Bucerotidae
Higher classification  Hornbill
Aceros httpsuploadwikimediaorgwikipediacommonsthu
Lower classifications  Knobbed hornbill, Wrinkled hornbill, Rufous‑necked hornbill, Walden's hornbill, Writhed hornbill

Aceros cassidix

Aceros is a genus of large south-east Asian hornbills (Bucerotidae family). This genus sometimes includes all species generally placed in the genus Rhyticeros. Alternatively, Aceros has been considered monotypic, only including the rufous-necked hornbill, in which case all of the remaining are moved to the Rhyticeros. Additionally, the white-crowned hornbill is sometimes placed in this genus, but most now place it in Berenicornis instead.


Among the species generally included in Aceros, the rufous-necked hornbill is unique in that it lacks a conspicuous casque, and its bill is mainly dull yellowish. In fact, the genus, which means "no horn/hornless," is named really for the rufous-necked hornbill. All other species generally placed in Aceros have a relatively high casque and brightly coloured bills.

Hornbill white crowned aceros comatus


As generally recognized, the following species belong in Aceros:

  • Wrinkled hornbill, Aceros corrugatus
  • Writhed hornbill, Aceros leucocephalus
  • Rufous-necked hornbill, Aceros nipalensis
  • Walden's hornbill, Aceros waldeni
  • An undescribed extinct hornbill species from Lifou in the Loyalty Islands, living until at least some 30.000 years ago, was initially placed in this genus. But its biogeography places it with the species now in Rhyticeros (Steadman, 2006).


    Aceros Wikipedia