Ceriagrion fallax
In 3 days ~50% in a week ~80%
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Doi Inthanon National Park | 🇹🇭 Thailand |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Taipei | 🇹🇼 Taiwan |
Possible
About 20% of wildlife watchers report a Black-Tailed Marsh Dart sighting in Doi Inthanon National Park on a given day, based on 22 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 18th most-seen of the 153 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
May and June
In those months about 40% of wildlife watchers report a Black-Tailed Marsh Dart in Doi Inthanon National Park on a given day, against under 5% in January and October–November, the lowest months. Those are among Doi Inthanon National Park's wettest months, with about 280 mm of rain a month against 20 mm in February.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Black-Tailed Marsh Dart sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Doi Inthanon National Park, in our data
Doi Inthanon National Park is the only park on Wallace's Line with enough records to rate Black-Tailed Marsh Dart sightings: about 20% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Black-Tailed Marsh Dart is recorded against all the insects logged in Doi Inthanon National Park (22 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.
