Blunt-winged Warbler

The blunt-winged warbler (Acrocephalus concinens) is a marsh-warbler (family Acrocephalidae). The species was first described by Robert Swinhoe in 1870. It was formerly included in the "Old World warbler" assemblage. It is found in Afghanistan, Pakistan, Northeast India and China; it winters in Myanmar, Thailand and Bangladesh. Acrocephalus concinens is the scientific name used by the project species list. The description here uses general species-wide information and does not imply that every trait has been documented separately in Vietnam.

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).