Black browed reed warbler

The black-browed reed warbler (Acrocephalus bistrigiceps) is a species of marsh-warbler (family Acrocephalidae). It was formerly included in the "Old World warbler" assemblage. It is found in Cambodia, China, Hong Kong, India, Indonesia, Japan, North Korea, South Korea, Laos, Malaysia, Mongolia, Myanmar, Nepal, Philippines, Russia, Singapore, Taiwan, Thailand, and Vietnam.

The black-browed reed warbler is similar and closely related to the more common and widespread Eurasian reed warbler. The bird spends its time foraging close to the ground inside undisturbed reed beds. Like many other wetland birds, it is of conservation concern owing to habitat loss-destruction of native marsh vegetation and its replacement by rice paddies and fishponds.