What are the chances of seeing a Sinna extrema in Beijing?
Rare
Under 5% of wildlife watchers report a Sinna extrema sighting in Beijing on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 247th most-seen of the 401 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
When is the best time to see a Sinna extrema in Beijing?
August and September
In those months about 10% of wildlife watchers report a Sinna extrema in Beijing on a given day, against under 5% in October to July, the lowest months. Those are among Beijing's wettest months, with about 85 mm of rain a month against almost none in January.
What time of day is best to see a Sinna extrema?
Between 4 and 7 pm
Across all the parks we cover, that three-hour window holds the most Sinna extrema sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Is Beijing the best place to see a Sinna extrema?
3rd of 3
Of the 3 cities where we can rate Sinna extrema sightings, Beijing ranks 3rd at under 5%. The best odds are in Nanjing (China, about 10%) and Hangzhou (China, about 10%).
Where does the Sinna extrema sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Sinna extrema is recorded against all the insects logged in Beijing (9 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.