- Passeriformes
- Pachycephalidae
Siffleur de Bornéo Pachycephala hypoxantha
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Identification
Unassuming passerine of Borneo’s central highland forests. Dark olive above and yellow below; males average brighter than females. Forages at middle levels in the forest, often joining mixed-species flocks. Listen for its loud, bright song: a series of snappy, strident notes, often with an undulating rhythm: “wit-chi’CHEW-chi’CHEW-chi’CHEW”.