Sericomyia chalcopyga
In 3 days ~10% in a week ~20%
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 |
Rare
Under 5% of wildlife watchers report a Western Pond Fly sighting in Portland on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 358th 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 20%, if each day is a fresh chance.
October
In that month about 10% of wildlife watchers report a Western Pond Fly in Portland on a given day, against under 5% in November to September, the lowest months.
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.
3rd of 3
Of the 3 cities where we can rate Western Pond Fly sightings, Portland ranks 3rd at under 5%. The best odds are in Vancouver (Canada, about 10%) and Seattle (United States, under 5%).
Same family: Syrphidae
The closest relatives of the Western Pond Fly that you can see in Portland (family Syrphidae, Hover Flies) are Yellow-Haired Sun Fly (about 10%), Narcissus Bulb Fly (about 10%) and Eurasian Drone Fly (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 Portland (9 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.
