It is closely related to the Writhed Hornbill, but can be recognized by the yellow throat and ocular skin in the male, and the blue throat and ocular skin in the female (both throat and ocular skin are deep orange or red in both sexes of the Writhed Hornbill).
Walden's Hornbill | Visayan Hornbill | Rhinoceros Hornbill | Yellow-casqued Hornbill | Hornbill | Sulu Hornbill | hornbill | Hemprich's Hornbill | Writhed Hornbill | Samar Hornbill | Indian Grey Hornbill ''Ocyceros birostris | Abyssinian Ground Hornbill |