Pollenia vagabunda
In 3 days ~10% in a week ~20%
Pollenia vagabunda is a species of blow fly in the family Polleniidae. It is widespread in Europe and can be found on carrion, although not associated with any specific stages of decomposition. P. vagabunda has also been found in North America, first being discovered there in 1958, with a range from the east coast to British Columbia. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Vagabond Cluster Fly sighting in Boston on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 967th most-seen of the 1200 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 Vagabond Cluster Fly in Boston on a given day, so our monthly data shows no clear season.
4th of 6
Of the 6 cities where we can rate Vagabond Cluster Fly sightings, Boston ranks 4th at under 5%. The best odds are in Helsinki (Finland, about 10%), Vancouver (Canada, under 5%) and Seattle (United States, under 5%).
Same order: Diptera
The closest relatives of the Vagabond Cluster Fly that you can see in Boston (order Diptera, Flies) are Margined Calligrapher (about 20%), Eastern Calligrapher (about 20%) and Transverse-Banded Flower Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Vagabond Cluster Fly is recorded against all the insects logged in Boston (6 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.
