Eider


The UK's heaviest, and also fastest flying, duck. A true sea duck, rarely found away from coasts, eiders are highly gregarious and usually stay close inshore, riding the swell in a sandy bay or strung out in long lines out beyond the breaking waves. It is an Amber List species because of its winter concentrations.
Along rocky coasts with suitable islands and reefs with protective rocks and vegetation. Many eiders nest in gull and tern colonies, where they derive some protection as their more aggressive neighbours chase away predators.
Sheltered rocky coasts and estuaries.
Shellfish, especially mussels.
A cooing call.
All year round on Craigleith, Isle of May and Fidra.
| Eggs | 4-6 |
| Incubation | 25-28 days |
| Fledging | 65-75 days |
| Maximum lifespan | 31 years |
| Length | 50-71cm |
| Wingspan | 80-108cm |
| Weight | 1,500-2,800g |
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