Cyclophora pendulinaria
In 3 days ~20% in a week ~40%
Cyclophora pendulinaria, the sweetfern geometer moth or pearly-grey wave, is a moth in the family Geometridae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Acadia National Park | 🇺🇸 United States | |
| 2 | Gros Morne National Park | 🇨🇦 Canada | |
| 3 | Great Bear Rainforest | 🇨🇦 Canada |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Montreal | 🇨🇦 Canada | |
| 2 | New York City | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Sweetfern Geometer Moth sighting in Great Bear Rainforest on a given day, based on 14 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 92nd most-seen of the 235 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.
June
In that month about 20% of wildlife watchers report a Sweetfern Geometer Moth in Great Bear Rainforest on a given day, against under 5% in July to May, the lowest months. That is one of Great Bear Rainforest's driest months, with about 150 mm of rain against 480 mm in November.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Sweetfern Geometer Moth sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is most active around dawn and dusk.
Among the best
Of the 3 parks where we can rate Sweetfern Geometer Moth sightings, Great Bear Rainforest ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Acadia National Park (United States, about 10%) and Gros Morne National Park (Canada, about 10%).
Same family: Geometridae
The closest relatives of the Sweetfern Geometer Moth that you can see in Great Bear Rainforest (family Geometridae, Geometer Moths) are Variable Carpet Moth (about 10%), Peppered Moth (about 10%) and Western Carpet (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Sweetfern Geometer Moth is recorded against all the insects logged in Great Bear Rainforest (14 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.
