Cyornis banyumas
Silhouette: L. Shyamal · PhyloPic
In 3 days ~30% in a week ~50%
The Javan blue flycatcher (Cyornis banyumas) is a species of bird in the family Muscicapidae. It is endemic to the Indonesian islands of Java and Panaitan. The Dayak blue flycatcher (Cyornis montanus) of Borneo, which was formerly considered conspecific, was split as a distinct species by the IOC in 2021.
It is typically solitary or spends time in pairs. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Khao Yai National Park | 🇹🇭 Thailand |
More parks will be added in future updates.
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Sea World Indonesia | 🇮🇩 Indonesia |
With luck
About 10% of wildlife watchers report a Javan Blue Flycatcher sighting in Khao Yai National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 130th most-seen of the 278 birds we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
January and March
In those months about 20% of wildlife watchers report a Javan Blue Flycatcher in Khao Yai National Park on a given day, against under 5% in February and April–November, the lowest months. Those are among Khao Yai National Park's driest months, with about 55 mm of rain a month against 330 mm in September.
Only Khao Yai National Park, in our data
Khao Yai National Park is the only park on Wallace's Line with enough records to rate Javan Blue Flycatcher sightings: about 10% of wildlife watchers there report one on a given day.
Same genus: Cyornis
The closest relatives of the Javan Blue Flycatcher that you can see in Khao Yai National Park (genus Cyornis, Blue Flycatchers and Jungle Flycatchers) are Hill Blue Flycatcher (about 20%) and Hainan Blue-Flycatcher (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Javan Blue Flycatcher is recorded against all the birds logged in Khao Yai National Park (5 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
