Austroagrion watsoni
In 3 days ~40% in a week ~70%
The eastern billabongfly (Austroagrion watsoni) is a damselfly in the family Coenagrionidae. It is also known as the eastern dart. Eastern billabongflies are small damselflies about 25mm (1 inch) in length. They are found near slow running water or still water, such as lakes, ponds and ditches. Male and female eastern billabongflies mate in a wheel position.
The male eastern billabongfly has a bright blue thorax with black markings, and a long and slender black abdomen with blue rings and a blue tip. The female is a similar size to the male and is pale blue to grayish-green in colour. The antehumeral stripe of the female is a contrastingly bright green.
Eastern billabongflies usually rest on plants either in a pond or at the waters edge, and sit very close to the water surface. They are relatively quick flyers. Eastern billabongflies appear similar to common bluetails and blue riverdamsels. Eastern billabongflies are smaller. Eastern billabongflies have a blue bar just behind their eyes where the common bluetail has two blue spots. The tips of the tails of eastern billabongflies have two black squares, whereas the common bluetail... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Lamington National Park | 🇦🇺 Australia | |
| 2 | Springbrook National Park | 🇦🇺 Australia | |
| 3 | Grampians National Park | 🇦🇺 Australia | |
| 4 | Blue Mountains National Park | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report an Eastern Billabongfly sighting in Springbrook National Park on a given day, based on 35 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 43rd most-seen of the 429 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
October and December
In those months about 30% of wildlife watchers report an Eastern Billabongfly in Springbrook National Park on a given day, against under 5% in February to August, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Eastern Billabongfly sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 4
Of the 4 parks where we can rate Eastern Billabongfly sightings, Springbrook National Park ranks 2nd at about 10%. The best odds are in Lamington National Park (Australia, about 20%).
Same family: Coenagrionidae
The closest relatives of the Eastern Billabongfly that you can see in Springbrook National Park (family Coenagrionidae, Narrow-winged Damselflies) are Flame-Headed Riverdamsel (about 10%), Australian Bluetail (about 10%) and Aurora Bluetail (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Eastern Billabongfly is recorded against all the insects logged in Springbrook National Park (35 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.
