Additionally, the Samar Hornbill is often included as a subspecies of the Mindanao Hornbill.
Mindanao | Central Mindanao University | Walden's Hornbill | Visayan Hornbill | Rhinoceros Hornbill | Northern Mindanao | Mindanao State University | Autonomous Region in Muslim Mindanao | Yellow-casqued Hornbill | Hornbill | TV Patrol Northern Mindanao | Sulu Hornbill | Radio Mindanao Network | Mindanao Scops Owl | hornbill | Hemprich's Hornbill | Writhed Hornbill | Samar Hornbill | Rio Grande de Mindanao | Indian Grey Hornbill ''Ocyceros birostris | Abyssinian Ground Hornbill |