Rana tagoi
Silhouette: Sharp Photography, sharpphotography.co.uk · PhyloPic
In 3 days ~20% in a week ~30%
Tago's brown frog or the Tago frog (Rana tagoi) is a species of frog in the family Ranidae endemic to Japan. It is widely distributed within Japan and found on Honshu, Shikoku, and Kyushu, as well as on some outlying islands. There are two subspecies:
Rana tagoi okiensis — Oki Islands Rana tagoi yakushimensis — Yakushima These might qualify as species. It can also introgres with its sister species, Rana sakuraii. These frogs are found in mountainous areas close to streams in the leaf-litter, or underneath stones in the streams. They lay their eggs in subterranean rivers, where the tadpoles grow into frogs. In late spring their croaks can be heard from above ground. Wikipedia →
Recording0:11
Japan · 2023
© Ian B Anderson · iNaturalist · CC BY-NC 4.0
Recording0:08
Japan · 2019
© grand · iNaturalist · CC BY-NC 4.0
Recording0:21
Japan · 2024
© Kento MIYAZAWA · 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 Tago's Brown Frog sighting in Osaka on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 8th most-seen of the 8 amphibians we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
February, May–June and August–September
In those months about 10% of wildlife watchers report a Tago's Brown Frog in Osaka on a given day, against under 5% in March–April, July and October–January, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Tago's Brown Frog sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Among the best
Of the 2 cities where we can rate Tago's Brown Frog sightings, Osaka ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Sendai (Japan, about 10%).
GBIF citizen-science records
It is estimated from how often the Tago's Brown Frog is recorded against all the amphibians logged in Osaka (7 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.
