Great Swift

Great Swift

Pelopidas assamensis

Daily sighting probability <5% · Rare
at Tuen Mun

In 3 days ~10% in a week ~30%

6 Verified sightings at Tuen Mun
January Best month

About the Great Swift

Pelopidas assamensis, the great swift, is a butterfly belonging to the family Hesperiidae. It was found in the Mandai area of Singapore. The caterpillar was discovered in the Bukit Timah Nature Reserve feeding on a bamboo plant. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability

More parks will be added in future updates.

Cities Where Found

# City Country Daily sighting probability
1 Hong Kong 🇨🇳 China
~10%
2 Tuen Mun 🇨🇳 China
<5%

Before you go

What are the chances of seeing a Great Swift in Tuen Mun?

Rare

Under 5% of wildlife watchers report a Great Swift sighting in Tuen Mun on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 492nd most-seen of the 557 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.

When is the best time to see a Great Swift in Tuen Mun?

January, April, September and November

In those months about 10% of wildlife watchers report a Great Swift in Tuen Mun on a given day, against under 5% in February–March, May–August, October and December, the lowest months.

Is Tuen Mun the best place to see a Great Swift?

2nd of 2

Of the 2 cities where we can rate Great Swift sightings, Tuen Mun ranks 2nd at under 5%. The best odds are in Hong Kong (China, about 10%).

Where does the Great Swift sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Great Swift is recorded against all the insects logged in Tuen Mun (6 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.

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