Trichiosoma triangulum
In 3 days ~30% in a week ~50%
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Denali National Park | 🇺🇸 United States | |
| 2 | Great Bear Rainforest | 🇨🇦 Canada |
With luck
About 10% of wildlife watchers report a Giant Birch Sawfly sighting in Denali National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 32nd most-seen of the 36 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
July
In that month about 20% of wildlife watchers report a Giant Birch Sawfly in Denali National Park on a given day, against under 5% in March–May and September–October, the lowest months. That is one of Denali National Park's wettest months, with about 150 mm of rain against 45 mm in April. November to February have too few records to rate.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Giant Birch Sawfly sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate Giant Birch Sawfly sightings, Denali National Park has the highest daily chance: about 10%. Next come Great Bear Rainforest (Canada, about 10%).
GBIF citizen-science records
It is estimated from how often the Giant Birch Sawfly is recorded against all the insects logged in Denali National Park (5 verified sightings from 2019 to 2026), 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.
