Orthetrum triangulare
In 3 days ~40% in a week ~70%
Orthetrum triangulare is an Asian freshwater dragonfly species. The common name for this species is blue-tailed forest hawk. Two subspecies of Orthetrum triangulare are currently recognised, the nominate subspecies and O. t. malaccense.
It is a medium-sized dragonfly with dark face and bluish eyes. Its thorax is also black with a broad apple green stripe on both sides. Segments 1-2 and 8–10 in the abdomen are black and the remaining segments are pruinosed with azure blue. It is usually found in marshes associated with hill streams where it breeds.
List of odonates of Sri Lanka List of odonates of India List of odonata of Kerala Media related to Orthetrum triangulare at Wikimedia Commons Data related to Orthetrum triangulare at Wikispecies Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Namdapha National Park | 🇮🇳 India | |
| 2 | Doi Inthanon National Park | 🇹🇭 Thailand | |
| 3 | Taroko National Park | 🇹🇼 Taiwan | |
| 4 | Khao Yai National Park | 🇹🇭 Thailand | |
| 5 | Kaeng Krachan National Park | 🇹🇭 Thailand |
Possible
About 20% of wildlife watchers report a Blue-Tailed Forest Hawk sighting in Taroko National Park on a given day, based on 21 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 87th most-seen of the 447 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
October
In that month about 30% of wildlife watchers report a Blue-Tailed Forest Hawk in Taroko National Park on a given day, against under 5% in September and December–February, the lowest months. That is one of Taroko National Park's wettest months, with about 570 mm of rain against 290 mm in December.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Blue-Tailed Forest Hawk sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 5
Of the 5 parks where we can rate Blue-Tailed Forest Hawk sightings, Taroko National Park ranks 3rd at about 20%. The best odds are in Namdapha National Park (India, about 40%) and Doi Inthanon National Park (Thailand, about 30%).
Same genus: Orthetrum
The closest relatives of the Blue-Tailed Forest Hawk that you can see in Taroko National Park (genus Orthetrum) are Blue Marsh Hawk (about 20%), Crimson-Tailed Marsh Hawk (about 10%) and Slender Skimmer (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Blue-Tailed Forest Hawk is recorded against all the insects logged in Taroko National Park (21 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.
