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Anthracoceros is a genus of birds in the family Bucerotidae.
The name is a combination of the Ancient Greek words:
 ανθραξ anthrax, ανθρακος anthrakos meaning "coal black" ,
and κερας keras, κερως kerōs meaning "horn".

1/ Malabar pied hornbill (Cao cát bụng trắng, Anthracoceros coronatus), also known as lesser pied hornbill
Anthracoceros coronatus [malabaricus or albirostris] (= Anthracoceros coronatus malabaricus)

2/ Black hornbill (Cao cát đen, Anthracoceros malayanus)

3/ Oriental pied hornbill (Cao cát phương đông, Anthracoceros albirostris) 
albirostris
From albus (“white”) +‎ rōstrum (“beak”)

Black hornbill (Cao cát đen, Anthracoceros malayanus)

The black hornbill (Anthracoceros malayanus) is a species of bird of the hornbill family Bucerotidae. 
The bird species is found in Asia in Brunei Darussalam, Indonesia, Malaysia, Singapore, Thailand.

Bucerotiformes, Bucerotidae, Buceros: Latin bucerus horned like an ox (Greek boukeros: horned like an ox: bous ox; keros: horn).

The name Anthracoceros is a combination of the Ancient Greek words:
 - ανθραξ anthrax, ανθρακος anthrakos meaning "coal black" ,
 - and κερας keras, κερως kerōs meaning "horn".

Oriental pied hornbill, or Sunda pied hornbill (convexus), or Malaysian pied hornbill.
(Cao cát phương đông, Anthracoceros albirostris) 
albirostris

The name is a combination of the Ancient Greek words:
 - ανθραξ anthrax, ανθρακος anthrakos meaning "coal black" ,
 - and κερας keras, κερως kerōs meaning "horn".

albirostris: From albus (“white”) +‎ rōstrum (“beak”)

The oriental pied hornbill an Indo-Malayan pied hornbill of the family Bucerotidae.