Callophrys mossii
In 3 days ~20% in a week ~40%
Callophrys mossii, commonly known as Moss's elfin, stonecrop elfin or Schryver's elfin, is a species of butterfly native to North America in the family Lycaenidae. It is found from British Columbia south to southern California and east to Wyoming and Colorado in isolated populations. The habitat consists of rocky outcrops, woody canyons and cliffs.
The wingspan is 22–28 mm. Adults are on wing from March to June in one generation per year. The larvae feed on Sedum (including S. spathulifolium and S. lanceolatum), Sedella, Dudleya and Parvisedum species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Bear Rainforest | 🇨🇦 Canada |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Moss's Elfin 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 103rd 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.
April
In that month about 20% of wildlife watchers report a Moss's Elfin in Great Bear Rainforest on a given day, against under 5% in June to March, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Moss's Elfin 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 Great Bear Rainforest, in our data
Great Bear Rainforest is the only park on Wallace's Line with enough records to rate Moss's Elfin sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Lycaenidae
The closest relatives of the Moss's Elfin that you can see in Great Bear Rainforest (family Lycaenidae, Gossamer-winged Butterflies) are Spring Azure (about 10%), Mariposa Copper (about 10%) and Gray Hairstreak (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Moss's Elfin 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.
