The Manchurian Reed-warbler (Acrocephalus tangorum) is a species of Old World warbler in the Sylviidae family. It is found in Cambodia, China, Hong Kong, South Korea, Laos, Russia, Thailand, Vietnam, and possibly Myanmar. Its natural habitat is swamps. It is threatened by habitat loss.
Source
BirdLife International 2007. Acrocephalus tangorum. 2007 IUCN Red List of Threatened Species. Downloaded on 2 July 2008.