Adult male © JJ Harrison eBird S133570987 Macaulay Library ML 558923551
Female © Ayuwat Jearwattanakanok
Adult male © Ayuwat Jearwattanakanok
Female © JJ Harrison
Juvenile male © Ayuwat Jearwattanakanok

Dayak Blue Flycatcher Cyornis montanus

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A medium-sized flycatcher with strikingly different male and female plumages. Male is beautifully colored, with deep blue upperparts, mostly orange underparts, and a white belly. Female is much duller, with a grayish head, gray-brown wings, a rufous tail, and rufous underparts. Scarce and local in the understory of hill forest. Song is jumble of melodious warbling and whistling notes. The calls are loud “chek” or “sit” notes, and are often mixed into the song. Similar to Bornean Blue Flycatcher, but darker, especially on the belly (in both sexes) and back (in the male). Also similar to Sunda Blue Flycatcher, but darker overall and shorter-billed. Dayak Blue Flycatcher is further distinguished by the less extensive black chin patch of the male and the rufous rather than blue tail of the female.