Argynnina cyrila
In 3 days ~20% in a week ~40%
Argynnina cyrila, or Cyril's brown, is a butterfly of the family Nymphalidae. It is found in Australia in southern Queensland, New South Wales, South Australia and Victoria. The wingspan is about 40 mm. The larvae feed on various grasses. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Wilsons Promontory National Park | 🇦🇺 Australia | |
| 2 | Great Otway National Park | 🇦🇺 Australia | |
| 3 | Royal National Park | 🇦🇺 Australia | |
| 4 | Blue Mountains National Park | 🇦🇺 Australia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sydney | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report a Cyril's Brown sighting in Royal National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 100th most-seen of the 175 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.
September
In that month about 30% of wildlife watchers report a Cyril's Brown in Royal National Park on a given day, against under 5% in November to August, the lowest months.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Cyril's Brown sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 4 parks where we can rate Cyril's Brown sightings, Royal National Park ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Wilsons Promontory National Park (Australia, about 10%) and Great Otway National Park (Australia, about 10%).
Same family: Nymphalidae
The closest relatives of the Cyril's Brown that you can see in Royal National Park (family Nymphalidae, Brush-footed Butterflies) are Brown Ringlet (about 30%), Monarch (about 20%) and Swordgrass Brown (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Cyril's Brown is recorded against all the insects logged in Royal National Park (8 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.
