What are the chances of seeing a Xylomya terminalis in Boston?
Rare
Under 5% of wildlife watchers report a Xylomya terminalis sighting in Boston on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 967th most-seen of the 1200 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 Xylomya terminalis in Boston?
June
In that month about 10% of wildlife watchers report a Xylomya terminalis in Boston on a given day, against under 5% in July to May, the lowest months.
Is Boston the best place to see a Xylomya terminalis?
Among the best
Of the 3 cities where we can rate Xylomya terminalis sightings, Boston ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Minneapolis [Saint Paul] (United States, under 5%) and Montreal (Canada, under 5%).
Where does the Xylomya terminalis sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Xylomya terminalis is recorded against all the insects logged in Boston (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.