Common Goldeneye (Bucephala clangula) female swimming with four chicks, Lac Le Jeune Provincial Park, British Columbia, Canada, North America

Adult female Barrow's Goldeneye (Bucephala islandica) in full breeding plumage in the calm waters of Red Bluff Bay, Southeastern Alaska, USA

Goldeneye (Bucephala clangula) female swimming in loch, early morning still water, back lit. Nr Kilchrenan, Argyll, Scotland, UK

A pair of adult Barrow's Goldeneye (Bucephala islandica) in full breeding plumage in the calm waters of Red Bluff Bay, Southeastern Alaska, USA

Adult Barrow's Goldeneye (Bucephala islandica) in full breeding plumage in the calm waters of Red Bluff Bay, Southeastern Alaska, USA

Adult male Barrow's Goldeneye (Bucephala islandica) in full breeding plumage in the calm waters of Red Bluff Bay, Southeastern Alaska, USA

Adult Barrow's Goldeneye (Bucephala islandica) in full breeding plumage in the calm waters of Lake Myvatn, Iceland

Adult male Barrow's Goldeneye (Bucephala islandica) taking flight in full breeding plumage in the calm waters of Red Bluff Bay, Southeastern Alaska, USA. Pacific Ocean. (RR)

Adult male Barrow's Goldeneye (Bucephala islandica) taking flight in full breeding plumage in the calm waters of Red Bluff Bay, Southeastern Alaska, USA. Pacific Ocean. (RR)

A pair of adult Barrow's Goldeneye (Bucephala islandica) in full breeding plumage in the calm waters of Red Bluff Bay, Southeastern Alaska, USA

Adult Barrow's Goldeneye (Bucephala islandica) in full breeding plumage in the calm waters of Lake Myvatn, Iceland

Adult male Barrow's Goldeneye (Bucephala islandica) in full breeding plumage in the calm waters of Red Bluff Bay, Southeastern Alaska, USA

Goldeneye Duck (Bucephala clangula), drakes swimming with hills in background. Argyll, Scotland, UK