Coenosia tigrina
In 3 days ~10% in a week ~20%
Coenosia tigrina, the hunter fly, killer fly, or common tiger fly, is a species of fly in the family Muscidae. Like other members of the genus, adults are predators that hunt flying insects, while larvae feed on earthworms. It is found in the Palearctic. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Liverpool | 🇬🇧 United Kingdom | |
| 2 | Portland | 🇺🇸 United States | |
| 3 | Salt Lake City | 🇺🇸 United States | |
| 4 | Seattle | 🇺🇸 United States | |
| 5 | Boston | 🇺🇸 United States | |
| 6 | Montreal | 🇨🇦 Canada | |
| 7 | London | 🇬🇧 United Kingdom | |
| 8 | New York City | 🇺🇸 United States | |
| 9 | Vancouver | 🇨🇦 Canada | |
| 10 | San Francisco | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Common Tiger Fly sighting in Vancouver on a given day, based on 13 verified sightings from GBIF citizen-science data. It is the 297th most-seen of the 482 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 Common Tiger Fly in Vancouver on a given day, so our monthly data shows no clear season.
Among the best
Of the 12 cities where we can rate Common Tiger Fly sightings, Vancouver ranks 9th at under 5%, level with the leaders once rounded. The best odds are in Liverpool (United Kingdom, under 5%), Portland (United States, under 5%) and Salt Lake City (United States, under 5%).
Same order: Diptera
The closest relatives of the Common Tiger Fly that you can see in Vancouver (order Diptera, Flies) are Black-Margined Flower Fly (about 10%), Common Drone Fly (about 10%) and Common European Greenbottle Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Common Tiger Fly is recorded against all the insects logged in Vancouver (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.
