Phylloscopus grammiceps
The Sunda Warbler (Phylloscopus grammiceps) is a small, energetic Old World warbler measuring approximately 10-12 cm in length and weighing around 5-8 grams. Its most distinctive field marks include bright greenish-olive upperparts, a clean whitish belly, and a strikingly patterned head. This pattern features prominent black lateral crown-stripes, a bright white supercilium, and a distinct white median crown-stripe, setting it apart from other leaf warblers in its range. A single, yellowish w...
This species primarily inhabits montane evergreen broadleaf forests and forest edges, as well as dense shrubbery and secondary growth. It is typically found at elevations ranging from 1000 to 3000 meters above sea level.
Its diet consists almost exclusively of small insects, including beetles, caterpillars, and spiders, gleaned from leaves and bark. Foraging occurs primarily in the understory and mid-canopy layers of the forest.
Sunda Warblers are highly active and restless birds, constantly flitting through foliage in search of food. They are primarily diurnal, foraging throughout the day and likely roosting in dense vegetation at night. Their foraging strategy involves gleaning small insects and larvae from leaves and ...
The Sunda Warbler is endemic to the Greater Sunda Islands, with its distribution specifically limited to the montane regions of Sumatra, Java, Bali, and Lombok. It is a resident species throughout its range, showing no significant migratory movements. Subspecies are recognized across these island...
Least Concern
- The Sunda Warbler is endemic to the Greater Sunda Islands, highlighting its unique evolutionary path within this isolated biogeographic region. - Its striking black and white head pattern, featuring a median crown stripe, is unusual among leaf warblers and makes it one of the most distinctly ma...