Description wikipedia

The Meratus blue flycatcher (Cyornis kadayangensis) 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 (3,000 and 4,300 ft) 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 underparts, while females have gray-brown heads and upperparts. They have a length of 15.7–16.0 cm (6.2–6.3 in); males weigh 18.5–19.75 g (0.653–0.697 oz) and females weigh 15.75–20.0 g (0.556–0.705 oz). The species' ecology is mostly unstudied, but it is known to forage in flocks with other insectivores. It is classified as being near threatened by the International Union for Conservation of Nature (IUCN) on the IUCN Red List. It is threatened by habitat loss and the songbird trade. It is thought to be locally common within the small area it inhabits, but its population is suspected to be declining.