Knobbed Hornbill (Rangkong)

Rhyticeros cassidix

Knobbed Hornbill habitat

A large Sulawesi endemic hornbill with unmistakable casque and loud wingbeats.

HabitatLowland and hill forest canopy
DietMostly fruit (figs), some insects
SizeAbout 70-80 cm long
BehaviorCanopy forager; wide-ranging; noisy flight

Where you might see it

Around mainland Sulawesi forests (Luwuk/Banggai region) with tall trees.

How to spot it

Scan treetops at sunrise; listen for deep calls and heavy wingbeats.

Responsible Encounter Guidelines

  • Stay on trails.
  • Keep distance from nesting cavities.
  • No drones near canopy.
  • Avoid playback calls.
  • Support local conservation guides.

Gallery

Knobbed Hornbill gallery 1
Knobbed Hornbill gallery 2

Conservation Status

Vulnerable; forest loss is the primary driver of decline.