A female Scaly-sided Merganser (Mergus squamatus) swimming in a shallow lake in Southen England

The Scaly-sided Merganser or Chinese Merganser (Mergus squamatus) is a typical merganser (genus Mergus). It lives in Manchuria and extreme Southeast Siberia, breeding in the north and wintering in the south. This is a captive bird but in the wild this species is considered endangered by the IUCN. Its numbers declined in the 1960s and 1970s due to loss of primary forests in its limited range, particularly along the major rivers in Russia.