Terry Whittaker / Mandarin duck (Aix galericulata) male female pair, Reddish Vale Country Park, Greater Manchester, UK. December

Russell Cooper / Mandarin duck drake (Aix galericulata) on the water, showing orange 'sail' feathers which are used when displaying, Southwest London, UK, March.

Russell Cooper / Mandarin duck drake (Aix galericulata) from behind flapping its wings. Southwest London, UK. February.

Florian Möllers / Mandarin duck (Aix galericulata) rear view of drake in breeding plumage, displaying, Berlin, Germany.

Konrad Wothe / Mandarin Duck (Aix galericulata) male and female standing in water, China

Oscar Dewhurst / Mandarin duck (Aix galericulata) reflected in water. Richmond Park, London, England, UK.

Ernie Janes / Portrait of a Mandarin duck (Aix galericulata) male animal and female. UK. Introduced species.

Ernie Janes / Portrait of a Mandarin duck (Aix galericulata) male animal. UK. Introduced species.

Heather Angel / Mandarin duck (Aix galericulata) pair mating on lake. Shanghai Zoo, China.

Russell Cooper / Mandarin duck drake (Aix galericulata) on the water Southwest London, UK, April.

Russell Cooper / Mandarin duck drake (Aix galericulata) on the water Southwest London, UK, April.

Russell Cooper / Mandarin duck drake (Aix galericulata) on a tree branch eating lichen, Southwest London, UK, April.