Tethida barda
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 | Boston | 🇺🇸 United States | |
| 2 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 3 | San Antonio | 🇺🇸 United States | |
| 4 | Toronto | 🇨🇦 Canada | |
| 5 | Washington | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Black-Headed Ash Sawfly sighting in Boston on a given day, based on 13 verified sightings from GBIF citizen-science data. It is the 783rd 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.
June
In that month about 10% of wildlife watchers report a Black-Headed Ash Sawfly in Boston on a given day, against under 5% in July to May, the lowest months.
Yes
Of the 5 cities where we can rate Black-Headed Ash Sawfly sightings, Boston has the highest daily chance: under 5%. Next come Minneapolis [Saint Paul] (United States, under 5%) and San Antonio (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Black-Headed Ash Sawfly is recorded against all the insects logged in Boston (13 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.
