What are the chances of seeing a Blue-Green Bottle Fly in Chicago?
Rare
Under 5% of wildlife watchers report a Blue-Green Bottle Fly sighting in Chicago on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 884th most-seen of the 978 insects we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
When is the best time to see a Blue-Green Bottle Fly in Chicago?
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Blue-Green Bottle Fly in Chicago on a given day, so our monthly data shows no clear season.
Is Chicago the best place to see a Blue-Green Bottle Fly?
Among the best
Of the 8 cities where we can rate Blue-Green Bottle Fly sightings, Chicago ranks 8th at under 5%, level with the leaders once rounded. The best odds are in Toronto (Canada, under 5%), Washington (United States, under 5%) and Boston (United States, under 5%).
Where does the Blue-Green Bottle Fly sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Blue-Green Bottle Fly is recorded against all the insects logged in Chicago (5 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.