Yellow-Horned Horntail

Yellow-Horned Horntail

Urocerus flavicornis

Daily sighting probability ~10% · With luck
at Jasper National Park

In 3 days ~30% in a week ~60%

16 Verified sightings at Jasper National Park From 2019 to 2026
39 In all 4 parks
September Best month
☀️ Diurnal When it's spotted

About the Yellow-Horned Horntail

Urocerus flavicornis, the yellow-horned horntail wasp, is a species of horntail native to North America. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Jasper National Park 🇨🇦 Canada
~10%
2 Banff National Park 🇨🇦 Canada
~10%
3 Rocky Mountain National Park 🇺🇸 United States
~10%
4 Great Bear Rainforest 🇨🇦 Canada
<5%

Cities Where Found

# City Country Daily sighting probability
1 Anchorage 🇺🇸 United States
~10%
2 Calgary 🇨🇦 Canada
<5%
3 Vancouver 🇨🇦 Canada
<5%

Before you go

What are the chances of seeing a Yellow-Horned Horntail in Jasper National Park?

With luck

About 10% of wildlife watchers report a Yellow-Horned Horntail sighting in Jasper National Park on a given day, based on 16 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 29th most-seen of the 88 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.

When is the best time to see a Yellow-Horned Horntail in Jasper National Park?

July to September

In those months about 20% of wildlife watchers report a Yellow-Horned Horntail in Jasper National Park on a given day, against under 5% in October to June, the lowest months.

What time of day is best to see a Yellow-Horned Horntail?

Between 11 am and 2 pm

Across all the parks we cover, that three-hour window holds the most Yellow-Horned Horntail sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.

Is Jasper National Park the best place to see a Yellow-Horned Horntail?

Yes

Of the 4 parks where we can rate Yellow-Horned Horntail sightings, Jasper National Park has the highest daily chance: about 10%. Next come Banff National Park (Canada, about 10%) and Rocky Mountain National Park (United States, about 10%).

Which relatives of the Yellow-Horned Horntail live in Jasper National Park?

Same order: Hymenoptera

The closest relatives of the Yellow-Horned Horntail that you can see in Jasper National Park (order Hymenoptera, Ants, Bees, Wasps, and Sawflies) are Vancouver Bumble Bee (about 20%), Black-Tailed Bumble Bee (about 10%) and Cryptic Bumble Bee (about 10%), with each one's daily chance of a sighting.

Where does the Yellow-Horned Horntail sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Yellow-Horned Horntail is recorded against all the insects logged in Jasper National Park (16 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.

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