Poecile varius
In 3 days ~30% in a week ~60%
The chestnut-bellied tit (Sittiparus castaneoventris) is a small passerine bird in the tit family Paridae that is endemic to Taiwan. The chestnut-bellied tit was first described by the English ornithologist John Gould in 1863 and given the binomial name Parus castaneoventris. It was formerly considered as a subspecies of the varied tit but was promoted to species status after the publication of a phylogenetic study in 2014.
The species differs from the varied tit in having underparts of a deep chestnut colour. PARUS (Taiwanese satellite family) Birding In Taiwan: Endemic subspecies of Taiwan birds - first impressions Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Nikko National Park | 🇯🇵 Japan | |
| 2 | Taroko National Park | 🇹🇼 Taiwan |
With luck
About 10% of wildlife watchers report a Chestnut-bellied Tit sighting in Tokyo on a given day, based on 2,787 verified sightings from GBIF citizen-science data. It is the 46th most-seen of the 229 birds we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
December to February
In those months about 20% of wildlife watchers report a Chestnut-bellied Tit in Tokyo on a given day, against under 5% in July and August, the lowest months. Those are among Tokyo's driest months, with about 80 mm of rain a month against 250 mm in October.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Chestnut-bellied Tit sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
12th of 14
Of the 14 cities where we can rate Chestnut-bellied Tit sightings, Tokyo ranks 12th at about 10%. The best odds are in Sapporo (Japan, about 80%), Gwangju (South Korea, about 50%) and Sendai (Japan, about 50%).
GBIF citizen-science records
It is estimated from how often the Chestnut-bellied Tit is recorded against all the birds logged in Tokyo (2,787 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.
