The mandarin duck, one of the most beautiful birds in the world, has established a feral population in Britain after escaping from wildfowl collections, raising complex questions about conservation value and ecological impact.
Mandarin duck welfare in Britain is generally good as they face few native predators adapted to them, have abundant food, and nest in old trees. However, as introduced birds, their welfare management requires a different ethical framework than that applied to native species. Illegal persecution, road mortality, and pollution of the river systems they inhabit are the primary welfare concerns. The declining wild population in Asia gives the UK feral population additional conservation significance.