Osmia cornifrons
In 3 days ~10% in a week ~20%
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 |
Rare
Under 5% of wildlife watchers report a Horn-Faced Mason Bee sighting in Seattle on a given day, based on 13 verified sightings from GBIF citizen-science data. It is the 264th most-seen of the 428 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Horn-Faced Mason Bee in Seattle on a given day, so our monthly data shows no clear season.
4th of 8
Of the 8 cities where we can rate Horn-Faced Mason Bee sightings, Seattle ranks 4th at under 5%. The best odds are in Portland (United States, about 10%), 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 Seattle (13 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.
