Photo: T. R. Shankar Raman / CC BY-SA 3.0 (Wikimedia Commons)
Knobbed Hornbill
Rhyticeros cassidix
Knobbed Hornbill (Rhyticeros cassidix) — Hornbills & Hoopoes of Australia & Oceania.
Found across 2 guides in our atlas — open any for the full checklist, photos and what's around right now.
The Knobbed Hornbill (Rhyticeros cassidix) is a member of the Bucerotidae family found in Australia & Oceania. Adults weigh 2.4 kg. The IUCN Red List lists it as Vulnerable.
Conservation status
IUCN Red List (opens in a new tab)Facing a high risk of extinction in the wild.
Where it fits
- Class Aves
- Order Bucerotiformes
- Family Bucerotidae Hornbills
- Genus Rhyticeros
- Species cassidix
Where it lives
Sulawesi, Lembeh (northeast of northeastern Sulawesi), Togian Is. (between northeastern and east-central Sulawesi) and Muna and Butung (=Buton; south of southeastern Sulawesi)
Quick facts
- Weight
- 2.4 kg
- Diet
- Fruit-eaters
- Family
- Bucerotidae
- Order
- Bucerotiformes
- Habitat
- Woodland
How to identify
Similar birds
Vulnerable
Vulnerable
Vulnerable
Critically Endangered
Biology & behaviour
Diet
The Knobbed Hornbill is a frugivore — it feeds mainly on fruit.
Behaviour
A bird of dense forest, it spends much of its time perched in trees and shrubs.
Migration
The Knobbed Hornbill is largely sedentary, staying within its range year-round rather than making regular long-distance migrations.
The Knobbed Hornbill (Rhyticeros cassidix) is a species of bird in the Bucerotidae family, part of the order Bucerotiformes. Its range spans Australia & Oceania. Its distribution covers AU Sulawesi, Lembeh (ne of ne Sulawesi), Togian Is. (between ne and ec Sulawesi) and Muna and Butung (=Buton; s of se Sulawesi).
It is a very large bird. Adults weighs around 2.4 kg, with a wing length of about 42.8 cm and a tail of around 30.2 cm.
It is classified as Vulnerable on the IUCN Red List and is a focus of conservation concern. Vulnerable species face a high risk of extinction in the wild if pressures continue.
The species has a mapped global range of roughly 165,000 km².
Songs & calls
Frequently asked questions
How big is the Knobbed Hornbill?
The Knobbed Hornbill is a very large bird that weighs around 2.4 kg.
Where does the Knobbed Hornbill live?
The Knobbed Hornbill is found across Australia & Oceania with a range covering AU Sulawesi, Lembeh (ne of ne Sulawesi), Togian Is. (between ne and ec Sulawesi) and Muna and Butung (=Buton; s of se Sulawesi), where it is typically found in wooded and forested habitats.
What family does the Knobbed Hornbill belong to?
The Knobbed Hornbill (Rhyticeros cassidix) belongs to the Bucerotidae family, in the order Bucerotiformes.
What does the Knobbed Hornbill eat?
The Knobbed Hornbill is a frugivore — it feeds mainly on fruit.
Does the Knobbed Hornbill migrate?
The Knobbed Hornbill is largely sedentary, staying within its range year-round rather than making regular long-distance migrations.
Is the Knobbed Hornbill endangered?
It is classified as Vulnerable on the IUCN Red List and is a focus of conservation concern Vulnerable species face a high risk of extinction in the wild if pressures continue.
What sound does the Knobbed Hornbill make?
1 real field recording of the Knobbed Hornbill — including its call — can be played in the Songs & calls section on this page, credited to the recordist who captured it.
How large is the Knobbed Hornbill's range?
The Knobbed Hornbill has a mapped global range of about 165,000 km².
Conservation
Every bird benefits from bird-safe windows, native plants, and keeping cats indoors. Small changes at home add up to real protection.
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