Cordulegaster bilineata
In 3 days ~20% in a week ~30%
Zoraena bilineata, the brown spiketail, is a species of spiketail in the dragonfly family Cordulegastridae. It is found in North America. The IUCN conservation status of Zoraena bilineata is "LC", least concern, with no immediate threat to the species' survival. The population is stable. The IUCN status was reviewed in 2017. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Congaree National Park | 🇺🇸 United States | |
| 2 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 3 | Shenandoah National Park | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Brown Spiketail sighting in Great Smoky Mountains National Park on a given day, based on 14 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 334th most-seen of the 822 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
April to July
In those months about 10% of wildlife watchers report a Brown Spiketail in Great Smoky Mountains National Park on a given day, against under 5% in August to March, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Brown Spiketail sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 3 parks where we can rate Brown Spiketail sightings, Great Smoky Mountains National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Congaree National Park (United States, about 10%).
Same order: Odonata
The closest relatives of the Brown Spiketail that you can see in Great Smoky Mountains National Park (order Odonata, Dragonflies and Damselflies) are Ebony Jewelwing (about 30%), Common Whitetail (about 20%) and Gray Petaltail (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Brown Spiketail is recorded against all the insects logged in Great Smoky Mountains National Park (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.
