Euploea sylvester
In 3 days ~30% in a week ~60%
Euploea sylvester, the double-branded crow, also known as the two-brand crow in Australia, is a butterfly found in South Asia, Southeast Asia and parts of Australia that belongs to the crows and tigers, that is, the danaid group of the brush-footed butterflies family.
Several races of the butterfly are recognized. Race pelor is found in Australia. Males, however, can be distinguished at once by the presence of two brands instead of a single one on the forewing. Of the females Lionel de Nicéville says, females of E. coreta... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kaeng Krachan National Park | 🇹🇭 Thailand |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Double-Branded Crow Butterfly sighting in Chennai on a given day, based on 58 verified sightings from GBIF citizen-science data. It is the 87th most-seen of the 376 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
June to August
In those months about 20% of wildlife watchers report a Double-Branded Crow Butterfly in Chennai on a given day, against under 5% in October to May, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Double-Branded Crow Butterfly sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 8
Of the 8 cities where we can rate Double-Branded Crow Butterfly sightings, Chennai ranks 2nd at about 10%. The best odds are in Salem (India, about 20%).
GBIF citizen-science records
It is estimated from how often the Double-Branded Crow Butterfly is recorded against all the insects logged in Chennai (58 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.
