Leucorrhinia borealis
In 3 days ~10% in a week ~20%
Leucorrhinia borealis, the boreal whiteface, is a species of skimmer in the dragonfly family Libellulidae. It is found in North America. The IUCN conservation status of Leucorrhinia borealis is "LC", least concern, with no immediate threat to the species' survival. The population is stable. The IUCN status was reviewed in 2017. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Elk Island National Park | 🇨🇦 Canada | |
| 2 | Riding Mountain National Park | 🇨🇦 Canada |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Edmonton | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report a Boreal Whiteface sighting in Edmonton on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 251st most-seen of the 390 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 Boreal Whiteface in Edmonton on a given day, against under 5% in July to May, the lowest months. That is one of Edmonton's wettest months, with about 85 mm of rain against 20 mm in February.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Boreal Whiteface sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Edmonton, in our data
Edmonton is the only city on Wallace's Line with enough records to rate Boreal Whiteface sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Boreal Whiteface is recorded against all the insects logged in Edmonton (8 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.
