Rapala nissa
In 3 days ~20% in a week ~40%
Rapala nissa, commonly known as the common flash is a species of lycaenid or blue butterfly found in India. It was previously assigned to the genus Bidaspa. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Common Flash sighting in Nanjing on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 170th most-seen of the 272 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
March
In that month about 20% of wildlife watchers report a Common Flash in Nanjing on a given day, against under 5% in May and August–February, the lowest months.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Common Flash sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is most active around dawn and dusk.
Among the best
Of the 2 cities where we can rate Common Flash sightings, Nanjing ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Beijing (China, about 10%).
Same family: Lycaenidae
The closest relatives of the Common Flash that you can see in Nanjing (family Lycaenidae, Gossamer-winged Butterflies) are Pale Grass Blue (about 20%), Angled Sunbeam (about 20%) and Holly Blue (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Common Flash is recorded against all the insects logged in Nanjing (8 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.
