Poecile varius
In 3 days ~70% in a week ~90%
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 |
Possible
About 30% of wildlife watchers report a Chestnut-bellied Tit sighting in Nikko National Park on a given day, based on 201 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 21st most-seen of the 102 birds we can rate there. Over three days the chance rises to about 70%, and over a week to about 90%, if each day is a fresh chance.
April
In that month about 60% of wildlife watchers report a Chestnut-bellied Tit in Nikko National Park on a given day, against about 20% in June–July and September, the lowest months.
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.
Yes
Of the 2 parks where we can rate Chestnut-bellied Tit sightings, Nikko National Park has the highest daily chance: about 30%. Next come Taroko National Park (Taiwan, about 10%).
GBIF citizen-science records
It is estimated from how often the Chestnut-bellied Tit is recorded against all the birds logged in Nikko National Park (201 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.
