Cyclophora pendulinaria
In 3 days ~40% in a week ~60%
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 Acadia National Park on a given day, based on 64 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 49th most-seen of the 405 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 60%, if each day is a fresh chance.
July and August
In those months about 20% of wildlife watchers report a Sweetfern Geometer Moth in Acadia National Park on a given day, against under 5% in October to April, the lowest months.
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.
Yes
Of the 3 parks where we can rate Sweetfern Geometer Moth sightings, Acadia National Park has the highest daily chance: about 10%. Next come Gros Morne National Park (Canada, about 10%) and Great Bear Rainforest (Canada, about 10%).
Same family: Geometridae
The closest relatives of the Sweetfern Geometer Moth that you can see in Acadia National Park (family Geometridae, Geometer Moths) are Pale Beauty (about 10%), Gray Spruce Looper Moth (about 10%) and Large Lace-Border Moth (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 Acadia National Park (64 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.
