Scolytus ratzeburgii
In 3 days ~10% in a week ~30%
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Birch Bark Beetle sighting in Helsinki on a given day, based on 17 verified sightings from GBIF citizen-science data. It is the 325th 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 30%, if each day is a fresh chance.
February
In that month about 20% of wildlife watchers report a Birch Bark Beetle in Helsinki on a given day, against under 5% in June–October and December–January, the lowest months.
Yes
Of the 2 cities where we can rate Birch Bark Beetle sightings, Helsinki has the highest daily chance: about 10%. Next come Moscow (Russia, under 5%).
Same family: Curculionidae
The closest relatives of the Birch Bark Beetle that you can see in Helsinki (family Curculionidae, True Weevils) are Black Vine Weevil (about 10%), Green Immigrant Leaf Weevil (about 10%) and Common Leaf Weevil (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Birch Bark Beetle is recorded against all the insects logged in Helsinki (17 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.
