Yellow-streaked Warbler

The yellow-streaked warbler (Phylloscopus armandii) is a species of leaf warbler (family Phylloscopidae). It was formerly included in the "Old World warbler" assemblage. It breeds across much of China and migrates south to Yunnan and northern Southeast Asia. Its natural habitat is temperate forests. It has a variety of vocalizations, with dozens of syllable types. Phylloscopus armandii is the scientific name used by the project species list.

This species belongs to a group of small, active songbirds that generally search foliage, stems or ground cover for insects and other small invertebrates. Many are easier to detect by voice than by sight, particularly in dense vegetation, and closely related forms may require calls, season and range for confident identification. These are group-level ecological notes, not Vietnam-specific breeding measurements (general warbler ecology).