Ocyceros gingalensis (Shaw, 1812)

Synonyms: Buceros gingalensis Shaw, 1812
Homonyms: Ocyceros gingalensis (Shaw, 1812)
Common names: Bucero grigio di Sri Lanka in Italian; Calao de Ceylan in French; Calao de Ceylan in French; Calao de Ceylan in French; Ceylon grey-hornbill in language.; Ceylontok in Dutch; Ceylontoko in German; Cálao gris cingalés in Spanish; Cálao gris cingalés in Spanish; Cálao gris cingalés in Spanish; Greisentoko in German; Singaleserhornfugl in Norwegian; Sri Lanka Gray Hornbill in English; Sri Lanka Gray Hornbill in English; Sri Lanka Gray Hornbill in English; Sri Lanka Gray-Hornbill in English; Sri Lanka Grey Hornbill in English; Sri Lanka Grey Hornbill in English; Sri Lanka Grey Hornbill in English; Sri Lanka Grey Hornbill in English; Sri Lanka-gråtoko in Danish; Sri Lankan Grey Hornbill in English; Sri Lankan Grey Hornbill in English; calau gris de Sri Lanka in Catalan–Valencian; ceyloni szürketokó in Hungarian; ceylonnäshornsfågel in Swedish; dzioborożec cejloński in Polish; srilankantoko in Finnish; tseiloni sarvnokk in Estonian; zoborožec srílanský in Czech; zobákorožec sivo-biely in Slovak; šrilankinis tokas in Lithuanian; Цейлонский серый ток in Russian; スリランカコサイチョウ in Japanese; 斯里兰卡灰犀鸟 in Chinese; 斯里蘭卡灰犀鳥 in Chinese; Sri Lanka Grey Hornbill in English; singaleserhornfugl in Norwegian Bokmål; Ceylon Grey-Hornbill in English

Dickinson, E. C., and J. V. Remsen Jr., eds., 2013: null. The Howard and Moore Complete Checklist of the Birds of the World, 4th Edition, Vol. 1 Non-passerines. l + 461.
Dickinson, Edward C., ed., 2003: null. The Howard and Moore Complete Checklist of the Birds of the World, 3rd edition. 1039.
Gill, Frank, and Minturn Wright, 2006: null. Birds of the World: Recommended English Names. ix + 259.