- Cyornis banyumas
About 15 cm
- Dark blue upperside except bright blue secondary coverts (may be concealed)
- Blackish side of head bordered above with paler blue
- Black on chin but rich orange on throat, breast and flanks (some images show whitish vent area)
Female differs in having greyish-brown upperside and sides of head, and rufous rump and sides of tail. Some images show grey head contrasting to rest of upperside. She is more orange on breast than similar local species.
Endemic to central and eastern Java.
It was previously included in Hill Blue Flycatcher.
Two subspecies are recognized.
- C. b. banyumas:
- Central Java
- C. b. ligus:
- Eastern Java
Usually below 1300 m asl in primary or secondary forest.
Eats invertebrates such as flies which are captured from a perch in the undergrowth.
The song has been described as melodious but including harsh sounds.
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, J. A. Gerbracht, D. Lepage, B. L. Sullivan, and C. L. Wood. 2021. The eBird/Clements checklist of Birds of the World: v2021. Downloaded from https://www.birds.cornell.edu/clementschecklist/download/
- Kirwan, G. M., P. Clement, and D. A. Christie (2021). Javan Blue Flycatcher (Cyornis banyumas), version 2.0. In Birds of the World (G. M. Kirwan and P. N. Maleko, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.hibfly3.02
- BirdForum Opus contributors. (2023) Javan Blue Flycatcher. In: BirdForum, the forum for wild birds and birding. Retrieved 2 December 2023 from https://www.birdforum.net/opus/Javan_Blue_Flycatcher
GSearch checked for 2020 platform.