Brachymesia gravida
In 3 days ~20% in a week ~40%
Brachymesia gravida, the four-spotted pennant, is a species of skimmer in the dragonfly family Libellulidae. It is found in North America. The IUCN conservation status of Brachymesia gravida 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 | Everglades National Park | 🇺🇸 United States | |
| 2 | Merritt Island National Wildlife Refuge | 🇺🇸 United States | |
| 3 | Big Cypress National Preserve | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Four-Spotted Pennant sighting in Houston on a given day, based on 158 verified sightings from GBIF citizen-science data. It is the 121st most-seen of the 1057 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.
May to September
In those months about 10% of wildlife watchers report a Four-Spotted Pennant in Houston on a given day, against under 5% in October to April, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Four-Spotted Pennant 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 6 cities where we can rate Four-Spotted Pennant sightings, Houston ranks 4th at about 10%, level with the leaders once rounded. The best odds are in Miami (United States, about 10%), Austin (United States, about 10%) and Orlando (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Four-Spotted Pennant is recorded against all the insects logged in Houston (158 verified sightings), 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.
