What are the chances of seeing a Brown Willow Beetle in Helsinki?
Rare
Under 5% of wildlife watchers report a Brown Willow Beetle sighting in Helsinki on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 602nd most-seen of the 838 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 Brown Willow Beetle in Helsinki?
May
In that month about 10% of wildlife watchers report a Brown Willow Beetle in Helsinki on a given day, against under 5% in June to April, the lowest months.
Is Helsinki the best place to see a Brown Willow Beetle?
Yes
Of the 3 cities where we can rate Brown Willow Beetle sightings, Helsinki has the highest daily chance: under 5%. Next come Birmingham (United Kingdom, under 5%) and Moscow (Russia, under 5%).
Which relatives of the Brown Willow Beetle live in Helsinki?
Same family: Chrysomelidae
The closest relatives of the Brown Willow Beetle that you can see in Helsinki (family Chrysomelidae, Leaf Beetles) are Alder Leaf Beetle (about 20%), Western Grape Rootworm (about 10%) and Chrysolina sanguinolenta (about 10%), with each one's daily chance of a sighting.
Where does the Brown Willow Beetle sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Brown Willow Beetle is recorded against all the insects logged in Helsinki (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.