What are the chances of seeing a Bead-Like Cottonwood Gall Aphid in Edmonton?
Rare
Under 5% of wildlife watchers report a Bead-Like Cottonwood Gall Aphid sighting in Edmonton on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 273rd most-seen of the 390 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.
When is the best time to see a Bead-Like Cottonwood Gall Aphid in Edmonton?
July
In that month about 10% of wildlife watchers report a Bead-Like Cottonwood Gall Aphid in Edmonton on a given day, against under 5% in August to June, the lowest months. That is one of Edmonton's wettest months, with about 95 mm of rain against 20 mm in February.
Is Edmonton the best place to see a Bead-Like Cottonwood Gall Aphid?
Among the best
Of the 7 cities where we can rate Bead-Like Cottonwood Gall Aphid sightings, Edmonton ranks 4th at under 5%, level with the leaders once rounded. The best odds are in Calgary (Canada, under 5%), Sacramento (United States, under 5%) and Portland (United States, under 5%).
Where does the Bead-Like Cottonwood Gall Aphid sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Bead-Like Cottonwood Gall Aphid is recorded against all the insects logged in Edmonton (7 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.