The head and back are dark brown, the underside is dull gray, and the tail is nearly uniform in color. It lives in wet meadows along rivers in the northern coniferous forest zone and feeds mainly on green sedge and grass. The 2017 HMW account places its records in southern Siberia, Russia.
The head and upperparts are dark brown, the underparts are dull gray, and the tail is nearly uniform in color.
It lives in regularly flooded, wet sedge-grass hummocky meadows with shrubs along rivers in the boreal coniferous forest zone. It feeds mainly on green parts of sedges and grasses.
An extinction-risk assessment has not been added yet.