John Shaw / Common eider duck (Somateria mollissima) female defending her nest from arctic fox (Vulpes lagopus). Longyearbyen, Spitsbergen. June.

Pal Hermansen / Eider ducks (Somateria molissima) flock taking off from sea, Trondelag, Norway, January.

Sven Zacek / Eider ducks (Somateria mollissima) males reflected in a small pond, Longyearbyen, Svalbard, Norway. June.

Thomas Hinsche / Common Eider (Somateria mollissima) female, Schleswig-Holstein, Germany

Laurent Geslin / Eider duck {Somateria mollissima} on water flapping its wings, UK.

Wild Wonders of Europe / O. Haarberg / Common eider (Somateria mollissima) pair, Jkulsrln glacial lagoon, Iceland, June 2008

Fergus Gill / 2020VISION / Female Eider (Somateria mollissima) swimming on sea, Outer Hebrides, Scotland, UK, June.

Mark Hamblin / 2020VISION / Eider (Somateria mollissima) male in flight in evening light. Aberdeenshire, Scotland, UK, March.

Mark Hamblin / 2020VISION / Eider (Somateria mollissima) male in flight in evening light, Aberdeenshire , Scotland, UK

Erlend Haarberg / Eider ducks (Somateria mollissima) taking off from water, Norway, January

Ben Hall / Eider (Somateria mollissima) male swimming, Northumberland, UK

Markus Varesvuo / Eider (Somateria molisima) male head profile, Finland May