Graphium doson
In 3 days ~60% in a week ~90%
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 |
Possible
About 20% of wildlife watchers report a Common Jay sighting in Kolkata on a given day, based on 89 verified sightings from GBIF citizen-science data. It is the 24th most-seen of the 213 insects we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
April
In that month about 40% of wildlife watchers report a Common Jay in Kolkata on a given day, against under 5% in February, the lowest month. That is one of Kolkata's driest months, with about 50 mm of rain against 330 mm in July.
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.
15th of 41
Of the 41 cities where we can rate Common Jay sightings, Kolkata ranks 15th at about 20%. The best odds are in Solapur (India, about 50%), Durg (India, about 40%) and Vijayawada (India, about 40%).
GBIF citizen-science records
It is estimated from how often the Common Jay is recorded against all the insects logged in Kolkata (89 verified sightings), 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.
