The Ochre-rumped Bunting (Emberiza yessoensis) is a species of bird in the Emberizidae family. It is found in China, Hong Kong, Japan, North Korea, South Korea, and Russia. Its natural habitats are temperate grassland and swamps. It is threatened by habitat loss.
Source
BirdLife International 2004. Emberiza yessoensis. 2006 IUCN Red List of Threatened Species. Downloaded on 25 July 2007.