Geron calvus
In 3 days ~20% in a week ~30%
Geron calvus is a species of bee fly in the family Bombyliidae. It is found in the northeastern United States from Virginia north to Ontario, Canada. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Smoky Mountains National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Toronto | 🇨🇦 Canada |
With luck
About 10% of wildlife watchers report a Bald Bee Fly sighting in Great Smoky Mountains National Park on a given day, based on 18 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 303rd most-seen of the 822 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
June and July
In those months about 10% of wildlife watchers report a Bald Bee Fly in Great Smoky Mountains National Park on a given day, against under 5% in August to May, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Bald Bee Fly sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Great Smoky Mountains National Park, in our data
Great Smoky Mountains National Park is the only park on Wallace's Line with enough records to rate Bald Bee Fly sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Bombyliidae
The closest relatives of the Bald Bee Fly that you can see in Great Smoky Mountains National Park (family Bombyliidae, Bee Flies) are Tiger Bee Fly (about 10%), Greater Bee Fly (about 10%) and Anthrax argyropygus (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Bald Bee Fly is recorded against all the insects logged in Great Smoky Mountains National Park (18 verified sightings from 2019 to 2026), 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.
