Knobbed Hornbill
Rhyticeros cassidix
- KingdomAnimalia (Animals)
- PhylumChordata (Chordates)
- ClassAves (Birds)
- OrderBucerotiformes (Hornbills and Hoopoes)
- FamilyBucerotidae (Hornbills)
- GenusRhyticeros
- SpeciesRhyticeros cassidix (Knobbed Hornbill)
About the Knobbed Hornbill
The knobbed hornbill (Rhyticeros cassidix), also known as Sulawesi wrinkled hornbill, is a colourful hornbill native to Indonesia. The species is sometimes placed in the genus Aceros. The knobbed hornbill is the faunal symbol of South Sulawesi province.
The knobbed hornbill is a large black hornbill with a yellow bill, white tail feathers, pale blue skin around eye, blackish feet and bare dark blue throat. Like other hornbills, the species is sexually dimorphic. The male has a rufous/buff face and neck, orange-red eyes, and a high red casque on the top of his bill. The female has a black face and neck, a yellow casque, and brownish eyes.
An Indonesian endemic, the knobbed hornbill is found in Sulawesi, Buton, Lembeh, Togian and Muna Island. It inhabits evergreen forest at an elevation of up to 1,800 m and also makes use of secondary forest, woodland and plantations for foraging.
As with other hornbills, the knobbed hornbill is believed to be monogamous. Its diet consists mainly of fruits, but it will also take insects and small vertebrates. Breeding season spans 27–30 weeks and appears to be triggered by a dramatic reduction... Wikipedia →
Closest Relatives at Tangkoko Nature Reserve
Global Distribution
Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.
where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is) · parks where it occurs — tap a pin for the sighting probability there
Parks Where Found
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Tangkoko Nature Reserve | 🇮🇩 Indonesia |
More parks will be added in future updates.
Quick answers
What are the chances of seeing a Knobbed Hornbill in Tangkoko Nature Reserve?
About 40% of wildlife watchers report a Knobbed Hornbill sighting in Tangkoko Nature Reserve, based on 625 verified sightings from GBIF citizen-science data.
When is the best time to see Knobbed Hornbill in Tangkoko Nature Reserve?
May has the highest sighting rate for Knobbed Hornbill in Tangkoko Nature Reserve in our monthly data.