II. Birds of Splendor
Rhinoceros hornbill
IN 1.40.09-A
Rhinoceros hornbill
Buceros rhinoceros
Adult portrait
II. Birds of Splendor
Field notes
A rhinoceros hornbill’s sweeping casque rises above a bill built to gather forest fruit. At nesting time, the female seals herself inside a tree cavity, leaving a feeding slit. The male supplies food until she emerges to help provision their growing young.
- Range
- Southern Thailand, the Malay Peninsula, Sumatra, Borneo and Java.
- Habitat
- Extensive tropical rainforest, including mature secondary and lower montane forest.
Conservation
Large old trees provide both food and nesting cavities. Forest loss can remove these essential sites; conservation work in Borneo has tested artificial nest boxes, including a documented successful rhinoceros hornbill nest.
Sources & conservation context
- IUCN Hornbill Specialist Group — Rhinoceros Hornbill
- Cincinnati Zoo — Rhinoceros Hornbill
- Woodland Park Zoo — Hutan Orangutan Program
Vulnerable — IUCN global species assessment, 2018, as reported by the IUCN Hornbill Specialist Group; applies to Buceros rhinoceros, not the helmeted hornbill.
Source review: 6 October 2026. Assessment dates, where given, belong to the cited source.