Orthetrum melania
In 3 days ~20% in a week ~40%
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Greater Blue Skimmer sighting in Nanjing on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 188th 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.
July
In that month about 20% of wildlife watchers report a Greater Blue Skimmer in Nanjing on a given day, against under 5% in June and October–April, the lowest months. That is one of Nanjing's wettest months, with about 240 mm of rain against 40 mm in December.
10th of 11
Of the 11 cities where we can rate Greater Blue Skimmer sightings, Nanjing ranks 10th at about 10%. The best odds are in Naha (Japan, about 30%), Nagoya (Japan, about 20%) and Osaka (Japan, about 20%).
Same genus: Orthetrum
The closest relatives of the Greater Blue Skimmer that you can see in Nanjing (genus Orthetrum) are White-Tailed Skimmer (about 10%), Slender Skimmer (about 10%) and Blue-Tailed Forest Hawk (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Greater Blue Skimmer is recorded against all the insects logged in Nanjing (7 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.
