Buff-throated Warbler

The buff-throated warbler (Phylloscopus subaffinis) is a species of leaf warbler (family Phylloscopidae). It was formerly included in the "Old World warbler" assemblage. It breeds in China and winters down toward northern Southeast Asia. Its natural habitat is temperate forests. Description Its underparts are yellowish, and its upperparts are greenish-gray. Its bill has a dark tip. It is similar to the Tickell's Leaf Warbler, but duller in color.

Vocalization It can be identified by its short two-note call. Diet It forages in low vegetation. Breeding It breeds on hillsides in open scrub habitat. 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).