What are the chances of seeing a Delta pyriforme in Hanoi?
Possible
About 20% of wildlife watchers report a Delta pyriforme sighting in Hanoi on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 27th most-seen of the 36 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
When is the best time to see a Delta pyriforme in Hanoi?
February and November
In those months about 40% of wildlife watchers report a Delta pyriforme in Hanoi on a given day, against under 5% in January, March–May and July–October, the lowest months. Those are among Hanoi's driest months, with about 35 mm of rain a month against 320 mm in August.
Is Hanoi the best place to see a Delta pyriforme?
Among the best
Of the 27 cities where we can rate Delta pyriforme sightings, Hanoi ranks 2nd at about 20%, level with the leaders once rounded. The best odds are in Xiuying District (China, about 20%).
Where does the Delta pyriforme sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Delta pyriforme is recorded against all the insects logged in Hanoi (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.