Bird Guide

Meratus Blue Flycatcher

Cyornis kadayangensis

Near ThreatenedEndemic

About the Meratus Blue Flycatcher

The Meratus blue flycatcher is a species of bird in the Old World flycatcher family, Muscicapidae. The species was described in 2021 by the Indonesian ornithologist Mohammed Irham and his colleagues, based on genetic, morphological, and vocal differences with other Cyornis flycatchers. It is endemic to the Meratus Mountains of Indonesian Borneo, where it has been recorded only from Mount Besar. It is most common at elevations between 900 and 1,300 m and inhabits montane rainforest, secondary forest, and rubber plantations. It is sexually dimorphic like other species in its genus; males have blue upperparts, iridescent blue patches on the forehead and shoulders, and orange-and-white…

Text adapted from Wikipedia, licensed CC BY-SA 4.0.

ID tip

Meratus blue flycatchers have a length of 15.7–16.0 cm (6.2–6.3 in) and a mass of 18.5–19.75 g (0.653–0.697 oz) in males and 15.75–20.0 g (0.556–0.705 oz) in females. The wings and tail respectively are 74–76 mm (2.9–3.0 in) and 56–62 mm (2.2–2.4 in) long in males, and 71.8–72.3 mm (2.83–2.85 in) and 56–58 mm (2.2–2.3 in) long in females. Like other blue flycatchers, it is sexually dimorphic; males have blue upperparts with iridescent patches on the head and shoulders, alongside orange-and-white underparts, while females have gray-brown heads and upperparts. Voice: The song of the Meratus blue flycatcher is a sequence of 3–7 measured and drawn out glissading notes, 1–3 seconds long in all. The terminal notes are sometimes faster and lower-pitched than the rest of the song. The song is vocally distinct from the songs of all other species in the Javan blue flycatcher complex other than the Dayak blue flycatcher.

Text from Wikipedia, licensed CC BY-SA 4.0.

Where the Meratus Blue Flycatcher lives

Regular range

When to see the Meratus Blue Flycatcher

Peak activity in September · a passage migrant species across most of its range

Easily confused with

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