Osmia cornifrons
In 3 days ~10% in a week ~30%
Osmia cornifrons, also known as the horned-face bee, is a species of solitary bee indigenous to Northern Asia. Physically, this species of bee is recognized for its horn-like extensions originating from its lower face. Populations of O. cornifrons have been recorded in multiple locations, including Japan, Korea, China, and Russia. O. cornifrons are more docile as compared to other species of bees and are less prone to sting when aggravated.
Osmia cornifrons was first introduced in Japan in the 1940s and were managed for crop pollination. Over a 50-year time period, use of O. cornifrons gradually increased until more than half of the apple orchards in Japan utilized this species. In 1977, O. cornifrons was introduced in the northeastern United States in an attempt to increase pollination productivity of fruit crops. This species was reintroduced multiple times during the following years.
This species of bee has been utilized for its effectiveness in pollinating flowers at a rapid rate. A single bee can visit up to 2,500 flowers a day and will spend 4–8 minutes per flower. Osmia cornifrons has a high flower constancy, signifying that the bee will... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Portland | 🇺🇸 United States | |
| 2 | Detroit | 🇺🇸 United States | |
| 3 | Boston | 🇺🇸 United States | |
| 4 | Seattle | 🇺🇸 United States | |
| 5 | Toronto | 🇨🇦 Canada | |
| 6 | Chicago | 🇺🇸 United States | |
| 7 | Washington | 🇺🇸 United States | |
| 8 | New York City | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Horn-Faced Mason Bee sighting in Portland on a given day, based on 42 verified sightings from GBIF citizen-science data. It is the 143rd most-seen of the 507 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
March to May
In those months about 10% of wildlife watchers report a Horn-Faced Mason Bee in Portland on a given day, against under 5% in June to February, the lowest months.
Yes
Of the 8 cities where we can rate Horn-Faced Mason Bee sightings, Portland has the highest daily chance: about 10%. Next come Detroit (United States, under 5%) and Boston (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Horn-Faced Mason Bee is recorded against all the insects logged in Portland (42 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.
