What are the chances of seeing an Arctia tigrina in Portland?
With luck
About 10% of wildlife watchers report an Arctia tigrina sighting in Portland on a given day, based on 91 verified sightings from GBIF citizen-science data. It is the 74th most-seen of the 507 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
When is the best time to see an Arctia tigrina in Portland?
April
In that month about 20% of wildlife watchers report an Arctia tigrina in Portland on a given day, against under 5% in July to March, the lowest months.
What time of day is best to see an Arctia tigrina?
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Arctia tigrina sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Is Portland the best place to see an Arctia tigrina?
Yes
Of the 2 cities where we can rate Arctia tigrina sightings, Portland has the highest daily chance: about 10%. Next come Seattle (United States, under 5%).
Which relatives of the Arctia tigrina live in Portland?
Same family: Erebidae
The closest relatives of the Arctia tigrina that you can see in Portland (family Erebidae, Underwing, Tiger, Tussock, and Allied Moths) are Isabella Tiger Moth (about 20%), Cinnabar Moth (about 20%) and Virginian Tiger Moth (about 10%), with each one's daily chance of a sighting.
Where does the Arctia tigrina sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Arctia tigrina is recorded against all the insects logged in Portland (91 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.