Andrena wilkella
In 3 days ~10% in a week ~20%
Andrena wilkella, also known as Wilke's mining bee, is a species of miner bee in the family Andrenidae. Its original distribution is Europe. It has been accidentally introduced to North America long ago, possibly with ship ballast. It is active between April and August. Andrena wilkella has been recorded to nest both singly and in aggregations. Andrena wilkella preferentially collects pollen from Fabaceae including clover and sweet clover.
The body length of the female is 10–12 mm, and the male is 9–11 mm. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 2 | Boston | 🇺🇸 United States | |
| 3 | Toronto | 🇨🇦 Canada | |
| 4 | Montreal | 🇨🇦 Canada | |
| 5 | New York City | 🇺🇸 United States | |
| 6 | Chicago | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Wilke's Mining Bee sighting in Montreal on a given day, based on 32 verified sightings from GBIF citizen-science data. It is the 284th most-seen of the 926 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.
June and July
In those months about 10% of wildlife watchers report a Wilke's Mining Bee in Montreal on a given day, against under 5% in August to May, the lowest months.
4th of 6
Of the 6 cities where we can rate Wilke's Mining Bee sightings, Montreal ranks 4th at under 5%. The best odds are in Minneapolis [Saint Paul] (United States, about 10%), Boston (United States, under 5%) and Toronto (Canada, under 5%).
GBIF citizen-science records
It is estimated from how often the Wilke's Mining Bee is recorded against all the insects logged in Montreal (32 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.
