Unidentified Eider Species (King or Common)
Unidentified Eider Species (King or Common)
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Spotted
This refers to an eider that could not be confidently identified as either a King Eider (Somateria spectabilis) or a Common Eider (Somateria mollissima). Both are large, robust sea ducks found in northern latitudes, presenting identification challenges under poor viewing conditions or for distant birds.
Where to spot
Found along northern coastal marine environments across the Arctic and subarctic regions of Eurasia and North America.
How to spot
Pay attention to overall size, head shape (especially the feathering extending onto the bill), and bill color. While adult males are distinct, females and immatures require close scrutiny, looking for subtle differences in head profile, bill structure, and plumage patterns. Observe alongside known individuals if possible.
When to spot
Year-round in suitable coastal habitats. Large numbers gather in wintering grounds in open ocean waters or ice leads.
Where to spot
Found along northern coastal marine environments across the Arctic and subarctic regions of Eurasia and North America.
How to spot
Pay attention to overall size, head shape (especially the feathering extending onto the bill), and bill color. While adult males are distinct, females and immatures require close scrutiny, looking for subtle differences in head profile, bill structure, and plumage patterns. Observe alongside known individuals if possible.
When to spot
Year-round in suitable coastal habitats. Large numbers gather in wintering grounds in open ocean waters or ice leads.
Telling juvenile or female King Eiders and Common Eiders apart can be particularly challenging due to their similar mottled brown plumage, often requiring very close observation or expert knowledge.
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