Phylloscopus claudiae
Silhouette: Jiekun He · PhyloPic
In 3 days ~10% in a week ~30%
Claudia's leaf warbler (Phylloscopus claudiae) is a leaf warbler found only in China. Its natural habitat is temperate forests. Most taxonomists previously considered it to be a subspecies of the Blyth's leaf warbler. Olsson, U., P. Alström, P.G.P. Ericson, and P. Sundberg. 2005. Non-monophyletic taxa and cryptic species - evidence from a molecular phylogeny of leaf-warblers (Phylloscopus, Aves). Molecular Phylogenetics and Evolution 36: 261–276.
Rheindt, F.E. 2006. Splits galore: the revolution in Asian leaf warbler systematics. BirdingASIA 5: 25–39. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Khao Yai National Park | 🇹🇭 Thailand | |
| 2 | Jiuzhaigou National Park | 🇨🇳 China | |
| 3 | Doi Inthanon National Park | 🇹🇭 Thailand | |
| 4 | Cuc Phuong National Park | 🇻🇳 Vietnam | |
| 5 | Kaeng Krachan National Park | 🇹🇭 Thailand |
Rare
Under 5% of wildlife watchers report a Claudia's Leaf-Warbler sighting in Cuc Phuong National Park on a given day, based on 12 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 107th most-seen of the 159 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
February
In that month about 20% of wildlife watchers report a Claudia's Leaf-Warbler in Cuc Phuong National Park on a given day, against under 5% in January, March–June and August–November, the lowest months. That is one of Cuc Phuong National Park's driest months, with about 50 mm of rain against 390 mm in August. July has too few records to rate.
Between 2 and 5 am
Across all the parks we cover, that three-hour window holds the most Claudia's Leaf-Warbler sightings with a recorded time, and about half of them come between 6 pm and 6 am: it is most active around dawn and dusk.
4th of 5
Of the 5 parks where we can rate Claudia's Leaf-Warbler sightings, Cuc Phuong National Park ranks 4th at under 5%. The best odds are in Khao Yai National Park (Thailand, about 20%), Jiuzhaigou National Park (China, about 20%) and Doi Inthanon National Park (Thailand, about 10%).
Same genus: Phylloscopus
The closest relatives of the Claudia's Leaf-Warbler that you can see in Cuc Phuong National Park (genus Phylloscopus, Leaf Warblers) are Yellow-browed Warbler (about 50%) and Limestone Leaf-Warbler (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Claudia's Leaf-Warbler is recorded against all the birds logged in Cuc Phuong National Park (12 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.
