Colias christina
In 3 days ~30% in a week ~60%
Colias christina, the Christina sulphur, is a butterfly in the family Pieridae found in western North America. Its range includes the Yukon and Northwest Territories south through British Columbia, Alberta, and Saskatchewan to Wyoming, Montana, and Utah. This species was named in honor of its first collector Christina Ross. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kluane National Park | 🇨🇦 Canada | |
| 2 | Banff National Park | 🇨🇦 Canada | |
| 3 | Jasper National Park | 🇨🇦 Canada |
With luck
About 10% of wildlife watchers report a Christina Sulphur sighting in Banff National Park on a given day, based on 56 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 21st most-seen of the 105 insects we can rate there. Over three days the chance rises to about 30%, 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 Christina Sulphur in Banff National Park on a given day, against under 5% in October to May, the lowest months.
Between 3 and 6 pm
Across all the parks we cover, that three-hour window holds the most Christina Sulphur sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 3
Of the 3 parks where we can rate Christina Sulphur sightings, Banff National Park ranks 2nd at about 10%. The best odds are in Kluane National Park (Canada, about 30%).
Same genus: Colias
The closest relatives of the Christina Sulphur that you can see in Banff National Park (genus Colias, Clouded Yellows) are Clouded Sulphur (about 10%), Labrador Sulphur (about 10%) and Skinner's Pelidne Sulphur (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Christina Sulphur is recorded against all the insects logged in Banff National Park (56 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.
