Rana pirica
In 3 days ~40% in a week ~60%
The Hokkaidō frog or the Ezo brown frog (Rana pirica) is a species in the family Ranidae found in Hokkaidō, Japan, and Sakhalin, Russia. Its natural habitats are boreal forests, temperate forests, temperate shrubland, temperate grassland, rivers, swamps, intermittent freshwater lakes, freshwater marshes, intermittent freshwater marshes, arable land, ponds, and irrigated land. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sapporo | 🇯🇵 Japan |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Sapporo Maruyama Zoo | 🇯🇵 Japan | |
| 2 | Asahiyama Zoo | 🇯🇵 Japan |
With luck
About 10% of wildlife watchers report an Ezo Red Frog sighting in Sapporo on a given day, based on 9 verified sightings from GBIF citizen-science data. Over three days the chance rises to about 40%, and over a week to about 60%, if each day is a fresh chance.
August
In that month about 40% of wildlife watchers report an Ezo Red Frog in Sapporo on a given day, against under 5% in July, October and December–May, the lowest months. That is one of Sapporo's wettest months, with about 160 mm of rain against 60 mm in April.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Ezo Red Frog sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Sapporo, in our data
Sapporo is the only city on Wallace's Line with enough records to rate Ezo Red Frog sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Ezo Red Frog is recorded against all the amphibians logged in Sapporo (9 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.
