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see duckduck,
common name for wild and domestic waterfowl of the family Anatidae, which also includes geese and swans. It is hunted and bred for its meat, eggs, and feathers. Strictly speaking, duck refers to the female and drake to the male.
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(ī`dər), river, 117 mi (188 km) long, rising S of Kiel, N Germany, and flowing N to the Kiel Canal before turning west and meandering to the North Sea at Tönning. It is navigable for most of its length. The Eider's lower course is regulated by locks; part of its upper course is followed by the Kiel Canal. The river separates Schleswig from Holstein.


, eider duck
any of several sea ducks of the genus Somateria, esp S. mollissima, and related genera, which occur in the N hemisphere. The male has black and white plumage, and the female is the source of eiderdown
References in periodicals archive ?
The potential importance of WFBV to common eider populations is not yet clear.
Concerns about eider mortality have not been unfounded: collisions with Northstar in fall 2001-04 killed at least 17 Common Eiders, four King Eiders, and two unidentified eiders, plus 14 Long-tailed Ducks (Clangula hyemalis) and two unidentified waterfowl, although none of them were killed during periods when we actually were sampling.
Incubation start and egg size in relation to body reserves in the common eider.
Looking at the bird up close, I understood immediately why waterfowlers across the continent consider the common eider one of their sport's top trophies.
Unaware of these remarkable facts, but turning them to practical advantage, the female common eider plucks the down from her breast with her beak and uses it as lining for her nest to keep her clutch of four to six eggs warm.
Clutch-size determination in precocial birds: a study of the Common Eider.
Temperature and heart rate as stress indicators of handled common eider.
The section above highlights that existing data are strongly biased towards a relatively limited number of species (much European knowledge actually being based on mallard or common eider studies; cf.
Isolation and characterization of a reovirus from common eiders (Somateria mollissima) from Finland.
This high variability in mtDNA control region between populations in close proximity has also been reported for another sea duck, the Common Eider (Somateria mollissima; Tiedemann et al.
Concerning European waterbirds, for instance the north European populations of mallard Anas platyrhynchos have been declining or stable, the Baltic breeding population of the common eider Somateria mollissima has decreased, the Baltic and Scandinavian populations of the common merganser Mergus merganser have probably decreased, and the populations of the goldeneye Bucephala clangula in northern and northwestern Europe have been stable (Wetlands International 2006).
An adult female common eider (Somateria mollissima) was observed swimming alone in Boston Harbor.