What are the chances of seeing a Brown-Barred Tortrix in Vienna?
Rare
Under 5% of wildlife watchers report a Brown-Barred Tortrix sighting in Vienna on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 1178th most-seen of the 1406 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-Barred Tortrix in Vienna?
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Brown-Barred Tortrix in Vienna on a given day, so our monthly data shows no clear season.
What time of day is best to see a Brown-Barred Tortrix?
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Brown-Barred Tortrix sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Where else can you see a Brown-Barred Tortrix?
Only Vienna, in our data
Vienna is the only city on Wallace's Line with enough records to rate Brown-Barred Tortrix sightings: under 5% of wildlife watchers there report one on a given day.
Where does the Brown-Barred Tortrix sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Brown-Barred Tortrix is recorded against all the insects logged in Vienna (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.