Callopistromyia annulipes
In 3 days ~20% in a week ~30%
The peacock fly (Callopistromyia annulipes) is a species of picture-winged flies in the genus Callopistromyia of the family Ulidiidae. They are native to and widespread across North America. This species has recently been introduced accidentally to Europe, and is known from Switzerland, Germany, the Netherlands, France, Italy, Slovenia, Slovakia, Hungary, Czechia, Austria, Belgium, Poland, Ukraine, Romania, San Marino and Croatia. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Shenandoah National Park | 🇺🇸 United States | |
| 2 | Great Smoky Mountains National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Berlin | 🇩🇪 Germany | |
| 2 | Warsaw | 🇵🇱 Poland | |
| 3 | Bucharest | 🇷🇴 Romania | |
| 4 | Washington | 🇺🇸 United States | |
| 5 | Vienna | 🇦🇹 Austria | |
| 6 | Philadelphia | 🇺🇸 United States | |
| 7 | Kyiv | 🇺🇦 Ukraine | |
| 8 | Baltimore | 🇺🇸 United States | |
| 9 | Paris | 🇫🇷 France | |
| 10 | New York City | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Peacock Fly sighting in Great Smoky Mountains National Park on a given day, based on 14 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 334th 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.
March and May–September
In those months about 10% of wildlife watchers report a Peacock Fly in Great Smoky Mountains National Park on a given day, against under 5% in April and October–February, the lowest months.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Peacock Fly sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 2 parks where we can rate Peacock Fly sightings, Great Smoky Mountains National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Shenandoah National Park (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Peacock Fly is recorded against all the insects logged in Great Smoky Mountains National Park (14 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.
