Euploea mulciber
In 3 days ~50% in a week ~80%
Euploea mulciber, the striped blue crow, is a butterfly found in India and Southeast Asia that belongs to the crows and tigers, that is, the danaid group of the brush-footed butterflies family. Hindwing ovate. Upperside: in the male dark brown entirely glossed with brilliant blue; the following violescent white spots—a spot in apex of cell, a much curved series of five or six discal spots, a subterminal sinuous row of larger spots and an incomplete terminal series of dots. Hindwing uniform, unmarked except for a large patch of light-brown, densely set hair-like scales on the outer upper third of the wing. The female is a lighter brown, the forewing only glossed with blue on the disc; spots white, and more or less similar to those on the forewing of the male, but larger and pure white; in addition a streak in cell and another curved streak in interspace 1 showing through faintly from the underside. Hindwing: narrow white streaks in cell and in the interspaces beyond and a terminal row of slightly elongate white spots.
Underside similar to the upperside in each, but the markings broader, larger and more distinct; in the male there are besides a small white spot in apex... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cuc Phuong National Park | 🇻🇳 Vietnam | |
| 2 | Royal Manas National Park | 🇧🇹 Bhutan | |
| 3 | Namdapha National Park | 🇮🇳 India | |
| 4 | Cat Tien National Park | 🇻🇳 Vietnam | |
| 5 | Taroko National Park | 🇹🇼 Taiwan | |
| 6 | Kaeng Krachan National Park | 🇹🇭 Thailand | |
| 7 | Khao Yai National Park | 🇹🇭 Thailand | |
| 8 | Gunung Leuser National Park | 🇮🇩 Indonesia | |
| 9 | Kinabalu Park | 🇲🇾 Malaysia |
Possible
About 20% of wildlife watchers report a Striped Blue Crow sighting in Cat Tien National Park on a given day, based on 19 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 31st most-seen of the 125 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.
September and December–March
In those months about 30% of wildlife watchers report a Striped Blue Crow in Cat Tien National Park on a given day, against under 5% in April, July and October, the lowest months. Those are among Cat Tien National Park's driest months, with about 110 mm of rain a month against 490 mm in July.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Striped Blue Crow sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
4th of 9
Of the 9 parks where we can rate Striped Blue Crow sightings, Cat Tien National Park ranks 4th at about 20%. The best odds are in Cuc Phuong National Park (Vietnam, about 40%), Royal Manas National Park (Bhutan, about 40%) and Namdapha National Park (India, about 40%).
Same genus: Euploea
The closest relatives of the Striped Blue Crow that you can see in Cat Tien National Park (genus Euploea, Crow Butterflies) are Magpie Crow Butterfly (about 30%) and Purple Crow Butterfly (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Striped Blue Crow is recorded against all the insects logged in Cat Tien National Park (19 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.
