Sericomyia chalcopyga
In 3 days ~20% in a week ~40%
Sericomyia chalcopyga is a species of syrphid fly in the family Syrphidae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Pacific Rim National Park Reserve | 🇨🇦 Canada | |
| 2 | Great Bear Rainforest | 🇨🇦 Canada | |
| 3 | Redwood National Park | 🇺🇸 United States | |
| 4 | Olympic National Park | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Western Pond Fly sighting in Olympic National Park on a given day, based on 27 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 50th most-seen of the 207 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
March–April and June–September
In those months about 10% of wildlife watchers report a Western Pond Fly in Olympic National Park on a given day, against under 5% in May and October–February, the lowest months. Those are among Olympic National Park's driest months, with about 110 mm of rain a month against 370 mm in November.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Western Pond Fly sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
4th of 4
Of the 4 parks where we can rate Western Pond Fly sightings, Olympic National Park ranks 4th at about 10%. The best odds are in Pacific Rim National Park Reserve (Canada, about 20%), Great Bear Rainforest (Canada, about 20%) and Redwood National Park (United States, about 10%).
Same family: Syrphidae
The closest relatives of the Western Pond Fly that you can see in Olympic National Park (family Syrphidae, Hover Flies) are Common Drone Fly (about 10%), Black-Margined Flower Fly (about 10%) and Melanostoma mellina (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Western Pond Fly is recorded against all the insects logged in Olympic National Park (27 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.
