Litoria watjulumensis
Silhouette: Robbi Bishop-Taylor · PhyloPic
In 3 days ~60% in a week ~90%
The Wotjulum frog (Litoria watjulumensis) is a species of frog in the subfamily Pelodryadinae. Its habitats are subtropical or tropical dry forests, subtropical or tropical moist lowland forests, subtropical or tropical swamps, rivers, intermittent rivers, swamps, freshwater lakes, freshwater marshes, intermittent freshwater marshes, and rocky areas.
Litoria watjulumensis was named for Watjulum Mission in the north of Western Australia, sometimes spelled 'wotjulum'. This has led to variants in the common names and the specific epithet, repeating the spelling of Tyler's publication as Hyla wotjulumensis. The common names include Watjulum or Wotjulum frog, Watjulum Mission tree frog, and giant or large rocket frog.
The publication of the species was based on a type collection by Copland. The collection, of 29 specimens at the Western Australian Museum, was reassigned as three syntypes; for this species, Litoria coplandi, and Litoria peronii. The type for Litoria watjulumensis was collected near Watjulum mission "close to Yampi Sound, north of King Sound". Wikipedia →
Recording0:27
Australia · 2022
© morgan-rae · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Nitmiluk National Park | 🇦🇺 Australia | |
| 2 | Litchfield National Park | 🇦🇺 Australia | |
| 3 | Kakadu National Park | 🇦🇺 Australia |
Possible
About 30% of wildlife watchers report a Watjulum Frog sighting in Kakadu National Park on a given day, based on 22 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 3rd most-seen of the 12 amphibians we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
January, March and September
In those months about 40% of wildlife watchers report a Watjulum Frog in Kakadu National Park on a given day, against under 5% in February, August and November–December, the lowest months. Those are among Kakadu National Park's wettest months, with about 180 mm of rain a month against almost none in August.
Between 6 and 9 pm
Across all the parks we cover, that three-hour window holds the most Watjulum Frog sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
3rd of 3
Of the 3 parks where we can rate Watjulum Frog sightings, Kakadu National Park ranks 3rd at about 30%. The best odds are in Nitmiluk National Park (Australia, about 40%) and Litchfield National Park (Australia, about 30%).
Same genus: Litoria
The closest relatives of the Watjulum Frog that you can see in Kakadu National Park (genus Litoria) are Australian Rocket Frog (about 20%), Desert Tree Frog (about 20%) and Rockhole Frog (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Watjulum Frog is recorded against all the amphibians logged in Kakadu National Park (22 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.
