Cheilosia illustrata
In 3 days ~20% in a week ~40%
Cheilosia illustrata is a species of hoverfly belonging to the family Syrphidae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Birmingham | 🇬🇧 United Kingdom | |
| 2 | Liverpool | 🇬🇧 United Kingdom | |
| 3 | Rotterdam [The Hague] | 🇳🇱 Netherlands | |
| 4 | Amsterdam | 🇳🇱 Netherlands | |
| 5 | Manchester | 🇬🇧 United Kingdom | |
| 6 | Leeds | 🇬🇧 United Kingdom | |
| 7 | London | 🇬🇧 United Kingdom | |
| 8 | Moscow | 🇷🇺 Russia |
With luck
About 10% of wildlife watchers report a Bumblebee Blacklet sighting in Rotterdam [The Hague] on a given day, based on 18 verified sightings from GBIF citizen-science data. It is the 140th most-seen of the 355 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 and August
In those months about 10% of wildlife watchers report a Bumblebee Blacklet in Rotterdam [The Hague] on a given day, against under 5% in September to June, the lowest months.
Among the best
Of the 8 cities where we can rate Bumblebee Blacklet sightings, Rotterdam [The Hague] ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Birmingham (United Kingdom, about 10%) and Liverpool (United Kingdom, about 10%).
GBIF citizen-science records
It is estimated from how often the Bumblebee Blacklet is recorded against all the insects logged in Rotterdam [The Hague] (18 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.
