Erythemis collocata
In 3 days ~30% in a week ~60%
Erythemis collocata, the western pondhawk, is a dragonfly of the family Libellulidae, native to western Canada, the western United States, and Mexico. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Death Valley National Park | 🇺🇸 United States | |
| 2 | Yellowstone National Park | 🇺🇸 United States | |
| 3 | Redwood National Park | 🇺🇸 United States | |
| 4 | Saguaro National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Portland | 🇺🇸 United States | |
| 2 | Las Vegas | 🇺🇸 United States | |
| 3 | Seattle | 🇺🇸 United States | |
| 4 | Phoenix | 🇺🇸 United States | |
| 5 | Sacramento | 🇺🇸 United States | |
| 6 | Denver | 🇺🇸 United States | |
| 7 | Vancouver | 🇨🇦 Canada | |
| 8 | Mesa | 🇺🇸 United States | |
| 9 | Salt Lake City | 🇺🇸 United States | |
| 10 | San Diego | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Western Pondhawk sighting in Portland on a given day, based on 306 verified sightings from GBIF citizen-science data. It is the 26th most-seen of the 507 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
July
In that month about 30% of wildlife watchers report a Western Pondhawk in Portland on a given day, against under 5% in October to April, the lowest months. That is one of Portland's driest months, with about 10 mm of rain against 250 mm in December.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Western Pondhawk sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 12 cities where we can rate Western Pondhawk sightings, Portland has the highest daily chance: about 10%. Next come Las Vegas (United States, about 10%) and Seattle (United States, about 10%).
Same family: Libellulidae
The closest relatives of the Western Pondhawk that you can see in Portland (family Libellulidae, Skimmers) are Common Whitetail (about 20%), Flame Skimmer (about 10%) and Blue Dasher (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Western Pondhawk is recorded against all the insects logged in Portland (306 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.
