Knobbed Hornbill

Rhyticeros cassidix (Temminck, 1823)

2.4 kgWeight

The knobbed hornbill (Rhyticeros cassidix), also known as Sulawesi wrinkled hornbill, is a colourful hornbill native to Indonesia.

Busiest months: July · Most records: Indonesia

Vulnerable

Where and when it's recorded

Busiest months: July · Most records: Indonesia

Knobbed Hornbill has been recorded at 8 of the 8,276 birding hotspots we track, in 1 country or region.

Records by month Northern Hemisphere

Where it's recorded most

Tangkoko Batuangus NR – Forest andIndonesia743 records
Tangkoko Batuangas NR – overlookIndonesia263 records
Dumoga-Bone (Bogani Nani Wartabone) NP – TambunIndonesia116 records

More places

Lore Lindu NPIndonesia78 records
Dumoga-Bone (Bogani Nani Wartabone) NP – TorautIndonesia66 records
Lore Lindu NP – Lake Tambing vicinityIndonesia42 records
Gunung MahawuIndonesia11 records
Gunung MahawuIndonesia1 record

Countries and regions with the most records

Indonesia

eBird records via GBIF up to 2024-12-31. A record means someone listed it; more records partly mean more birders, not more birds.

About

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.

Excerpt from Wikipedia, CC BY-SA 4.0 · authors · Read more on Wikipedia

Questions

How big is the Knobbed Hornbill?

The Knobbed Hornbill weighs around 2.4 kg.

Where does the Knobbed Hornbill live?

Its breeding range: Australasia: Sulawesi, Lembeh (northeast of northeastern Sulawesi), Togian Islands (between northeastern and east-central Sulawesi) and Muna and Butung (=Buton; south of southeastern Sulawesi). It is most often recorded in Indonesia.

When is the best time to see the Knobbed Hornbill?

At the hotspots we track, it is recorded most in July (Northern Hemisphere).

Is the Knobbed Hornbill endangered?

The IUCN Red List classifies the Knobbed Hornbill as Vulnerable.

What does the Knobbed Hornbill eat?

Main food: Fruit.

What family is the Knobbed Hornbill in?

It belongs to the family Hornbills (Bucerotidae), order Bucerotiformes.

At a glance

Weight: 2.4 kg
Habitat: Forest
Diet: Fruit
Lifestyle: Perches in trees
Migration: Resident (barely migrates)
Conservation: Vulnerable

More measurements

Wing: 428 mm
Tail: 302 mm
Bill: 220 mm
Tarsus: 67 mm

Averages from the AVONET dataset; length from field guides where available.

Range

Australasia: Sulawesi, Lembeh (northeast of northeastern Sulawesi), Togian Islands (between northeastern and east-central Sulawesi) and Muna and Butung (=Buton; south of southeastern Sulawesi)

Breeding range, IOC World Bird List 15.2