Cordulia shurtleffii
In 3 days ~50% in a week ~80%
The American emerald (Cordulia shurtleffii) is a species of dragonfly found in North America. It is colored mostly black with a yellow ring between segments 2 and 3.. The distribution range of this dragonfly includes the northern United States and Canada, with a typical body length ranging from 1.7 to 2.0 inches. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Riding Mountain National Park | 🇨🇦 Canada | |
| 2 | Elk Island National Park | 🇨🇦 Canada | |
| 3 | Isle Royale National Park | 🇺🇸 United States | |
| 4 | Gros Morne National Park | 🇨🇦 Canada | |
| 5 | Yosemite National Park | 🇺🇸 United States | |
| 6 | Great Bear Rainforest | 🇨🇦 Canada | |
| 7 | Rocky Mountain National Park | 🇺🇸 United States |
Possible
About 20% of wildlife watchers report an American Emerald sighting in Riding Mountain National Park on a given day, based on 52 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 11th most-seen of the 104 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
June
In that month about 40% of wildlife watchers report an American Emerald in Riding Mountain National Park on a given day, against under 5% in July to April, the lowest months. That is one of Riding Mountain National Park's wettest months, with about 100 mm of rain against 20 mm in February.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most American Emerald sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 7 parks where we can rate American Emerald sightings, Riding Mountain National Park has the highest daily chance: about 20%. Next come Elk Island National Park (Canada, about 10%) and Isle Royale National Park (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the American Emerald is recorded against all the insects logged in Riding Mountain National Park (52 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.
