Pachycephala hypoxantha
The Bornean Whistler (Pachycephala hypoxantha) is a striking, medium-sized passerine endemic to the montane cloud forests of Borneo. Averaging 14.5-15.5 cm (5.7-6.1 inches) in length, this robust songbird is instantly recognizable by its vibrant, almost entirely bright yellow underparts, contrasting sharply with an olive-green back, wings, and head. Its distinctive field marks include a sturdy, dark bill, dark legs, and often a subtle yellowish wash on the nape, though it lacks the prominent ...
Exclusively inhabits montane cloud forests, mossy forests, and stunted ridge-top vegetation in the highlands of Borneo, typically at elevations above 1,200 meters (3,900 feet) up to 2,800 meters (9,200 feet).
Primarily insectivorous, feeding on a variety of insects, spiders, and other small invertebrates gleaned from leaves, twigs, and bark.
Bornean Whistlers are active, arboreal foragers, typically observed alone or in pairs, but occasionally joining mixed-species flocks in the mid-story and canopy. They employ a gleaning foraging strategy, meticulously searching foliage and branches for insects and other invertebrates. Their territ...
The Bornean Whistler is strictly endemic to the island of Borneo, making it a sought-after species for birders visiting the region. Its distribution is fragmented, confined to the higher elevation montane regions across the island. Key areas include the mountainous spine running through Sabah and...
Least Concern
- The Bornean Whistler is an altitudinal specialist, rarely found below 1,200 meters, making it a true denizen of the 'sky islands' of Borneo. - Its scientific name, Pachycephala hypoxantha, translates roughly to 'thick head' (Pachycephala) and 'yellow underneath' (hypoxantha), accurately describ...