Graphium doson
In 3 days ~40% in a week ~60%
Graphium doson, the common jay, is a black, tropical papilionid (swallowtail) butterfly with pale blue semi-transparent central wing bands that are formed by large spots. There is a marginal series of smaller spots. The underside of wings is brown with markings similar to upperside but whitish in colour. The sexes look alike. The species was first described by father and son entomologists Cajetan and Rudolf Felder.
It is widespread and common throughout Southeast Asia, including lower elevations in Sri Lanka and southern India, Eastern Ghats, Satpuras, Bengal, Assam and Bangladesh, and the Himalayan foothills. The species is however scarce in southern Honshū, Japan. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cuc Phuong National Park | 🇻🇳 Vietnam | |
| 2 | Cat Tien National Park | 🇻🇳 Vietnam | |
| 3 | Kaeng Krachan National Park | 🇹🇭 Thailand | |
| 4 | Sinharaja Forest Reserve | 🇱🇰 Sri Lanka | |
| 5 | Bali Barat National Park | 🇮🇩 Indonesia | |
| 6 | Khao Yai National Park | 🇹🇭 Thailand | |
| 7 | Taroko National Park | 🇹🇼 Taiwan | |
| 8 | Khao Sok National Park | 🇹🇭 Thailand | |
| 9 | Kinabatangan Wildlife Sanctuary | 🇲🇾 Malaysia |
With luck
About 10% of wildlife watchers report a Common Jay sighting in Taroko National Park on a given day, based on 18 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 119th 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 60%, if each day is a fresh chance.
May to July
In those months about 20% of wildlife watchers report a Common Jay in Taroko National Park on a given day, against under 5% in April and September–February, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Common Jay sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
7th of 9
Of the 9 parks where we can rate Common Jay sightings, Taroko National Park ranks 7th at about 10%. The best odds are in Cuc Phuong National Park (Vietnam, about 30%), Cat Tien National Park (Vietnam, about 30%) and Kaeng Krachan National Park (Thailand, about 20%).
Same genus: Graphium
The closest relatives of the Common Jay that you can see in Taroko National Park (genus Graphium, Swordtails, Jays, Bluebottles and allies) are Common Bluebottle (about 30%), Tailed Jay (about 10%) and Glassy Bluebottle (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Common Jay is recorded against all the insects logged in Taroko National Park (18 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.
