Azuragrion nigridorsum
In 3 days ~10% in a week ~20%
Azuragrion nigridorsum, the black-tailed bluet or sailing bluet, is a species of damselfly in family Coenagrionidae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | uMkhuze Game Reserve | 🇿🇦 South Africa | |
| 2 | iSimangaliso Wetland Park | 🇿🇦 South Africa | |
| 3 | Garden Route National Park | 🇿🇦 South Africa | |
| 4 | Kruger National Park | 🇿🇦 South Africa | |
| 5 | Table Mountain National Park | 🇿🇦 South Africa |
Rare
Under 5% of wildlife watchers report a Sailing Bluet sighting in Cape Town on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 208th most-seen of the 311 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
January and November
In those months about 10% of wildlife watchers report a Sailing Bluet in Cape Town on a given day, against under 5% in February–October and December, the lowest months. Those are among Cape Town's driest months, with about 35 mm of rain a month against 140 mm in June.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Sailing Bluet sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 2
Of the 2 cities where we can rate Sailing Bluet sightings, Cape Town ranks 2nd at under 5%. The best odds are in Durban (South Africa, about 10%).
Same family: Coenagrionidae
The closest relatives of the Sailing Bluet that you can see in Cape Town (family Coenagrionidae, Narrow-winged Damselflies) are Common Bluetail (about 20%) and Common Citril (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Sailing Bluet is recorded against all the insects logged in Cape Town (10 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.
