How to identifyThe Eider is the UK's heaviest and fastest flying duck. It's a true seaduck, rarely found away from coasts. Its reliance on coastal shellfish for food has brought it into conflict with mussel farmers. Eiders are very sociable and usually stay close to shore, riding the swell in a sandy bay or strung out in long lines beyond the breaking waves. It is an Amber List species because of its winter concentrations.
* This map is intended as a guide. It shows general distribution rather than detailed, localised populations.