Buergeria robusta
Silhouette: Jose Carlos Arenas-Monroy · PhyloPic
In 3 days ~20% in a week ~40%
Buergeria robusta (robust Buerger's frog or strong stream frog) is a species of frog in the family Rhacophoridae. It is sympatric with Buergeria choui and Buergeria otai but is much larger in size. The species is endemic to Taiwan, where it is known by the name brown tree frog. Buergeria robusta is a common and widespread species found at low to medium altitudes. These frogs live mainly near the creeks or streams. They are locally threatened by habitat loss; they are also collected for consumption.
The genetic landscape of Buergeria robusta presents high congruence to the topography of Taiwan; populations on the eastern and western sides of the Central Mountain Range showed a prominent genetic divergence. Buergeria robusta are medium to large-sized treefrogs. Their body is stocky; males grow to 4–5 cm (1.6–2.0 in) in snout-vent length and females to 7–8 cm (2.8–3.1 in). The skin of the dorsum is smooth. The colour varies with the environment from brown or gray to greenish and to even yellow.
Breeding season is from February to September, when males can be found sitting and calling on tops of rocks. Eggs are deposited directly in water... Wikipedia →
Recording0:23
Taiwan · 2023
© taiwan_habu · iNaturalist · CC BY-NC 4.0
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Taiwan · 2023
© Larry Chen · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Robust Kajika Frog sighting in Taichung on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 10th most-seen of the 10 amphibians 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.
August
In that month about 20% of wildlife watchers report a Robust Kajika Frog in Taichung on a given day, against under 5% in May–July and October–January, the lowest months. That is one of Taichung's wettest months, with about 330 mm of rain against 40 mm in December.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Robust Kajika Frog sightings with a recorded time, and about 9 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Among the best
Of the 2 cities where we can rate Robust Kajika Frog sightings, Taichung ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Taipei (Taiwan, about 10%).
GBIF citizen-science records
It is estimated from how often the Robust Kajika Frog is recorded against all the amphibians logged in Taichung (5 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.
