Chelodina expansa
In 3 days ~20% in a week ~50%
Chelodina (Chelydera) expansa, commonly known as the broad-shelled turtle, broad-shelled river turtle, or broad-shelled snake-necked turtle, is a pleurodiran freshwater turtle found in south-eastern and eastern Australia. It is the largest of the long-necked turtles.
Chelodina expansa is a species of freshwater turtle within the family Chelidae. It is commonly known as the broad-shelled turtle, broad-shelled river turtle, or broad-shelled snake-necked turtle, or giant snake-necked turtle,
It is widely sympatric with the Murray River turtle and eastern snake-necked turtle. Broad-shelled river turtles are found throughout the Murray-Darling basin of southeastern Australia. A number of distinct populations are also found across areas of central and coastal Queensland.
C. expansa is mostly found in turbid waters of depths greater than three metres. It is mostly a river turtle, generally inhabiting permanent streams but is also found in oxbows, ponds in floodplains, backwaters, and swamps. In South Australia, it is only found in the main channel of the Murray River and is almost completely aquatic. It is rarer than the two other freshwater... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Brisbane | 🇦🇺 Australia |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | San Diego Zoo | 🇺🇸 United States | |
| 2 | Kyabram Fauna Park | 🇦🇺 Australia | |
| 3 | Cape May County Park & Zoo | 🇺🇸 United States | |
| 4 | Allwetterzoo Münster | 🇩🇪 Germany | |
| 5 | Münster Zoo | 🇩🇪 Germany | |
| 6 | Tashkent Zoo | 🇺🇿 Uzbekistan | |
| 7 | Nikolaev Zoo | 🇺🇦 Ukraine | |
| 8 | Chattanooga Zoo at Warner Park | 🇺🇸 United States | |
| 9 | Featherdale Sydney Wildlife Park | 🇦🇺 Australia | |
| 10 | Sea Life Sydney Aquarium | 🇦🇺 Australia | |
| 11 | Wild Life Sydney | 🇦🇺 Australia | |
| 12 | National Aquarium | 🇺🇸 United States | |
| 13 | Tennessee Aquarium | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Giant Snake-necked Turtle sighting in Brisbane on a given day, based on 65 verified sightings from GBIF citizen-science data. It is the 20th most-seen of the 43 reptiles we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
March
In that month about 20% of wildlife watchers report a Giant Snake-necked Turtle in Brisbane on a given day, against under 5% in February, July–September and December, the lowest months. That is one of Brisbane's wettest months, with about 140 mm of rain against 40 mm in July.
Only Brisbane, in our data
Brisbane is the only city on Wallace's Line with enough records to rate Giant Snake-necked Turtle sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Giant Snake-necked Turtle is recorded against all the reptiles logged in Brisbane (65 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.
