Phylloscopus coronatus
Silhouette: Jiekun He · PhyloPic
In 3 days ~50% in a week ~80%
The eastern crowned warbler (Phylloscopus coronatus) is a species of Old World warbler in the family Phylloscopidae. It inhabits boreal and temperate forests in the east Palearctic. The eastern crowned warbler is a medium-sized, rather robust and brightly coloured leaf warbler. It is dark olive-green above and white below with a strong head pattern of dark, grey lateral crown stripes with an indistinct yellowish median crown stripe. It also has a long yellowish-white supercilium with a dark stripe through the eye and dark lores and dusky yellow cheeks. It has a single pale wingbar. The square tail shows a slight fork. It has quite a strong, robust, pale-coloured bill and dark legs.
The eastern crowned warbler breeds in eastern Siberia from the Argun River eastwards and southwards into western Manchuria and into central Sichuan, the Korean Peninsula and Japan. It winters in south-east Asia from eastern India and Bangladesh to Java. It has occurred as a vagrant in western Europe with the first record for Great Britain being in County Durham in 2009; this was the fifth record for the Western Palearctic (UK and Scandinavia). Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Nikko National Park | 🇯🇵 Japan | |
| 2 | Khao Sok National Park | 🇹🇭 Thailand | |
| 3 | Khao Luang National Park | 🇹🇭 Thailand | |
| 4 | Kaeng Krachan National Park | 🇹🇭 Thailand | |
| 5 | Taman Negara National Park | 🇲🇾 Malaysia | |
| 6 | Kerinci Seblat National Park | 🇮🇩 Indonesia | |
| 7 | Khao Yai National Park | 🇹🇭 Thailand | |
| 8 | Cuc Phuong National Park | 🇻🇳 Vietnam |
Possible
About 20% of wildlife watchers report an Eastern Crowned-Warbler sighting in Nikko National Park on a given day, based on 76 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 44th most-seen of the 102 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.
May
In that month about 40% of wildlife watchers report an Eastern Crowned-Warbler in Nikko National Park on a given day, against under 5% in November, the lowest month.
Between 3 and 6 am
Across all the parks we cover, that three-hour window holds the most Eastern Crowned-Warbler 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 8 parks where we can rate Eastern Crowned-Warbler sightings, Nikko National Park has the highest daily chance: about 20%. Next come Khao Sok National Park (Thailand, about 20%) and Khao Luang National Park (Thailand, about 10%).
Same genus: Phylloscopus
The closest relatives of the Eastern Crowned-Warbler that you can see in Nikko National Park (genus Phylloscopus, Leaf Warblers) are Japanese Leaf Warbler (about 10%) and Sakhalin Leaf-Warbler (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Eastern Crowned-Warbler is recorded against all the birds logged in Nikko National Park (76 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.
