Overview
Whitehead’s Broadbill (Calyptomena whiteheadi), named after the renowned British explorer and naturalist John Whitehead, is the largest and most magnificent member of the broadbill family (Calyptomenidae). Strictly endemic to the misty mountain cloud forests of Borneo, this plump, charismatic bird is instantly recognizable by its dazzling electric-green plumage, prominent forehead tuft, and jet-black throat patch. Moving quietly through the mid-canopy, it acts as a critical seed disperser across high-elevation rainforest ecosystems.
Biology and Physical Characteristics
Measuring up to 28 centimeters (11 inches) in length, Calyptomena whiteheadi possesses a stout, robust body with an exceptionally wide, gaping beak adapted for swallowing large wild figs whole. Its plumage is a masterclass in avian splendor: dazzling, iridescent emerald and vivid lime-green feathers cover its torso, accented by a striking black patch across the throat and upper breast, black spots on the wing coverts, and black flight feathers. A dense tuft of forward-facing green feathers arches over the base of its bill, shielding its nostrils from mountain moisture. Females resemble males but are slightly duller and lack the prominent black throat bib.
Behavior and Ecology
Whitehead’s Broadbill is an obligate resident of cool, damp cloud forests between 900 and 1,980 meters elevation. It operates as a specialized frugivore, spending hours perched unobtrusively in fruiting fig trees (Ficus), plucking ripe fruits and swallowing them whole before regurgitating or defecating intact seeds across steep mountain slopes. Pairs construct remarkable, pendulous gourd-shaped nests woven from green moss, lichens, and fine rootlets, suspended from thin twigs dangling over deep ravines to safeguard eggs from arboreal predators like civets and tree snakes.
Conservation and Human Impact
The IUCN assesses Calyptomena whiteheadi as Least Concern. Because its distribution is tied strictly to rugged, high-elevation montane terrain unsuitable for commercial agriculture, large swathes of its native habitat remain well protected within Kinabalu Park, Gunung Mulu National Park, and the Heart of Borneo transboundary conservation zone. However, habitat fragmentation at lower elevational boundaries and long-term climate warming that alters montane mist belts represent emerging conservation concerns.
Interesting Factoid
Whitehead’s Broadbill is the heavyweight champion of the broadbill family: it has an enormous, frog-like wide mouth hidden under a fluffy green feather visor, allowing it to gulp down giant wild figs larger than golf balls in a single swallow!
Last updated: October 2026