Tickell's Leaf Warbler
Phylloscopus affinis
黄腹柳莺
Introduction
A small leaf warbler inhabits mountain habitats of South and Southeast Asia, including forest canopies, low shrubbery, and woodland edges. It feeds by gleaning insects from foliage and executing short aerial sallies while investigating leaf undersides and twigs. Identification features include clear yellowish underparts and the absence of wing bars. The species exhibits constant motion and deliberate foraging behavior throughout its range.
Description
A small, slim leaf warbler with distinctive yellowish underparts and supercilium. The legs are slender and dark, contrasting with a largely pale lower mandible. The wing panel appears grayish, and notably, this species lacks the wing bars found in many similar warblers. The overall coloration combines greenish tones above with the characteristic bright yellow undersides that aid in field identification.
Identification
The clear yellowish underparts serve as the primary identification feature, immediately distinguishing this species from lookalikes. The complete absence of wing bars further separates it from several similar leaf warbler species. The grayish wing panel and pale lower mandible provide additional supporting characteristics for confident identification in the field.
Distribution & Habitat
This species occupies a broad range across South and Southeast Asia, including Bangladesh, Bhutan, China, India, Myanmar, Nepal, Pakistan, and Thailand. Three subspecies are recognized, with P. a. affinis occupying the eastern Himalayas from Nepal to southeast Tibet, P. a. perflavus ranging through the western Himalayas from Pakistan to northern India, and P. a. occisinensis found in west-central China. The species breeds in barren mountain landscapes among rocks and low bushes.
Behavior & Ecology
An exclusively insectivorous species that feeds through gleaning foliage and performing short aerial sallies to capture prey. The breeding season spans May through August, when pairs construct nests from dry grasses and plant fibers placed among rocks and low vegetation in mountain terrain. This species maintains an exceptionally active lifestyle, constantly moving through its habitat in search of food while displaying acrobatic agility as it explores vegetation.
Conservation
Insufficient data exists to provide a comprehensive conservation assessment for this species.
Culture
No cultural significance or folklore associated with this species has been documented.
Source: Wikipedia · CC BY-SA 3.0
Taxonomy
- Order
- Passeriformes
- Family
- Phylloscopidae
- Genus
- Phylloscopus
- eBird Code
- y00989
Vocalizations
Subspecies (3)
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Phylloscopus affinis affinis
breeds eastern Himalayas; winters to Myanmar and Thailand
-
Phylloscopus affinis occisinensis
breeds eastern Tibet-Qinghai plateau, and China in Sichuan and Gansu; winter range undescribed
-
Phylloscopus affinis perflavus
breeds western Himalayas; winter range not known (overlaps with nominate affinis?)
Data Sources
Species description from Wikipedia, licensed under CC BY-SA 3.0.
Bird images and sounds sourced from GBIF, contributed by citizen scientists worldwide under Creative Commons licenses.
Taxonomy data from AviList 2025.