Pseudonaja textilis
Silhouette: SeismicShrimp · PhyloPic
In 3 days ~30% in a week ~60%
The eastern brown snake (Pseudonaja textilis), often referred to as the common brown snake, is a species of extremely venomous snake in the family Elapidae. The species is native to eastern and central Australia and southern New Guinea. It was first described by André Marie Constant Duméril, Gabriel Bibron, and Auguste Duméril in 1854. The adult eastern brown snake has a slender build and can grow to 2 m (7 ft) in length. The colour of its surface ranges from pale brown to black, while its underside is pale cream-yellow, often with orange or grey splotches. The eastern brown snake is found in most habitats except dense forests, often in farmland and on the outskirts of urban areas, as such places are populated by its main prey, the house mouse. The species is oviparous. The International Union for Conservation of Nature classifies the snake as a least-concern species, though its status in New Guinea is unclear.
It is considered the world's second-most venomous land snake after the inland taipan (Oxyuranus microlepidotus), based on its LD50 value (subcutaneous) in mice. The main effects of its venom are on the circulatory system: coagulopathy, haemorrhage (bleeding), cardiovascular collapse, and cardiac arrest. One of the main components of the venom is the prothrombinase complex pseutarin-C, which breaks down prothrombin. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Grampians National Park | 🇦🇺 Australia | |
| 2 | Hattah-Kulkyne National Park | 🇦🇺 Australia | |
| 3 | Booderee National Park | 🇦🇺 Australia | |
| 4 | Kosciuszko National Park | 🇦🇺 Australia | |
| 5 | Royal National Park | 🇦🇺 Australia | |
| 6 | Blue Mountains National Park | 🇦🇺 Australia | |
| 7 | Lamington National Park | 🇦🇺 Australia | |
| 8 | Great Otway National Park | 🇦🇺 Australia |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Australia Zoo | 🇦🇺 Australia | |
| 2 | Taronga Zoo | 🇦🇺 Australia | |
| 3 | Melbourne Zoo | 🇦🇺 Australia | |
| 4 | Billabong Sanctuary | 🇦🇺 Australia | |
| 5 | Sydney Zoo | 🇦🇺 Australia | |
| 6 | Reptile Gardens | 🇺🇸 United States | |
| 7 | Australian Reptile Park | 🇦🇺 Australia | |
| 8 | Sea Life Sydney Aquarium | 🇦🇺 Australia | |
| 9 | Wild Life Sydney | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report an Eastern Brown Snake sighting in Blue Mountains National Park on a given day, based on 26 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 31st most-seen of the 44 reptiles we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
September and December
In those months about 20% of wildlife watchers report an Eastern Brown Snake in Blue Mountains National Park on a given day, against under 5% in May to July, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Eastern Brown Snake sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
6th of 8
Of the 8 parks where we can rate Eastern Brown Snake sightings, Blue Mountains National Park ranks 6th at about 10%. The best odds are in Grampians National Park (Australia, about 20%), Hattah-Kulkyne National Park (Australia, about 20%) and Booderee National Park (Australia, about 20%).
Same family: Elapidae
The closest relatives of the Eastern Brown Snake that you can see in Blue Mountains National Park (family Elapidae, Elapid Snakes) are Red-bellied Black Snake (about 30%), Highlands Copperhead (about 30%) and Eastern Tiger Snake (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Eastern Brown Snake is recorded against all the reptiles logged in Blue Mountains National Park (26 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.
