Zosterops erythropleurus
Silhouette: Ferran Sayol · PhyloPic
In 3 days ~50% in a week ~80%
The chestnut-flanked white-eye (Zosterops erythropleurus) is a bird in the family Zosteropidae. The species was first described by Robert Swinhoe in 1863. It is found in forests, and prefers rather deep mixed and coniferous forests.
It is 10.5 cm in length and has a distinct chestnut patch on its flanks. The bill base and lower mandible may be pinkish. Its underparts are whiter. The similar Japanese white-eye is pale brown on its flanks. It is migratory, breeding in Manchuria and migrating to central China, the province of Yunnan and northern Southeast Asia in the winter. It is the most migratory species of white-eye. It breeds in poplar, alder and willow forests, thickets and groves, and winters in deciduous and evergreen forests, usually above 1000 m. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Doi Inthanon National Park | 🇹🇭 Thailand | |
| 2 | Khao Yai National Park | 🇹🇭 Thailand | |
| 3 | Jiuzhaigou National Park | 🇨🇳 China | |
| 4 | Kaeng Krachan National Park | 🇹🇭 Thailand |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Schönbrunn Zoo | 🇦🇹 Austria |
Possible
About 20% of wildlife watchers report a Chestnut-flanked White-eye sighting in Doi Inthanon National Park on a given day, based on 760 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 52nd most-seen of the 367 birds we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
December
In that month about 40% of wildlife watchers report a Chestnut-flanked White-eye in Doi Inthanon National Park on a given day, against under 5% in May to August, the lowest months. That is one of Doi Inthanon National Park's driest months, with about 45 mm of rain against 340 mm in August.
Between 2 and 5 am
Across all the parks we cover, that three-hour window holds the most Chestnut-flanked White-eye sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is most active around dawn and dusk.
Yes
Of the 4 parks where we can rate Chestnut-flanked White-eye sightings, Doi Inthanon National Park has the highest daily chance: about 20%. Next come Khao Yai National Park (Thailand, about 20%) and Jiuzhaigou National Park (China, about 10%).
Same genus: Zosterops
The closest relatives of the Chestnut-flanked White-eye that you can see in Doi Inthanon National Park (genus Zosterops, Typical White-eyes) are Indian White-eye (about 20%) and Swinhoe’s White-eye (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Chestnut-flanked White-eye is recorded against all the birds logged in Doi Inthanon National Park (760 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.
