Thecabius populimonilis
In 3 days ~10% in a week ~20%
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Calgary | 🇨🇦 Canada | |
| 2 | Sacramento | 🇺🇸 United States | |
| 3 | Portland | 🇺🇸 United States | |
| 4 | Edmonton | 🇨🇦 Canada | |
| 5 | Seattle | 🇺🇸 United States | |
| 6 | San Francisco | 🇺🇸 United States | |
| 7 | Vancouver | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report a Bead-Like Cottonwood Gall Aphid sighting in Portland on a given day, based on 18 verified sightings from GBIF citizen-science data. It is the 269th 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.
June
In that month about 10% of wildlife watchers report a Bead-Like Cottonwood Gall Aphid in Portland on a given day, against under 5% in July to May, the lowest months. That is one of Portland's driest months, with about 55 mm of rain against 250 mm in December.
Among the best
Of the 7 cities where we can rate Bead-Like Cottonwood Gall Aphid sightings, Portland ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Calgary (Canada, under 5%) and Sacramento (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Bead-Like Cottonwood Gall Aphid is recorded against all the insects logged in Portland (18 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.
