Knowra Common eider Common eider The common eider is a large sea duck of northern coastal waters. Males have distinctive black-and-white plumage, and both sexes grow dense insulating down.
Sea duck : A duck adapted to marine or coastal habitats, often feeding by diving. The common eider belongs to this group of marine-adapted ducks.
Diving : Underwater movement used by animals to forage, escape, or travel. Common eiders dive from the surface to capture prey on the seabed.
Eiderdown : The insulating down collected from common eider nests, traditionally used as a lightweight filling. The common eider supplies the down associated with this material.
St. Lawrence Estuary : A broad estuary in eastern Canada where the St. Lawrence River meets the Gulf of St. Lawrence. Its islands and coastal waters support important common eider breeding colonies.
Climate change in the Arctic : Long-term warming and related environmental changes occurring across the Arctic region. Changing ice, prey distributions, and weather can alter eider habitat and breeding conditions.
Eider : A genus of large sea ducks in the genus Somateria, found chiefly in northern waters. The common eider is one of the eider species.
Molluscivory : A feeding strategy in which animals eat mollusks such as clams and mussels. Mollusks are a major part of the common eider's diet.
Eiderdown harvesting : The collection of loose down from eider nests, traditionally practiced in northern coastal communities. Harvesters gather down after nesting, often under rules intended to protect breeding birds.
Svalbard : A Norwegian Arctic archipelago between mainland Norway and the North Pole. Common eiders breed along Svalbard's coasts and islands.
Sea duck conservation : The study and management of sea duck populations, habitats, and human-caused threats. Eiders face conservation questions shared with other marine-dependent ducks.
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