Four common eider
carcasses recovered from Great Island were submitted to the US Geological Survey's National Wildlife Health Center (NWHC; Madison, WI, USA) for cause-of-death determination.
Between 1998 and 2014, recurrent mortality events were reported in the Dresser's subspecies of the common eider
(Somateria mollissima dresseri) on Cape Cod, Massachusetts, USA, near Wellfleet Harbor.
Breeding of the Common Eider
(Somateria mollissima) on the Beaufort Sea coast of Alaska.
Cohort-specific differences in reproductive output in a declining common eider
Somateria mollissima population.
An interesting recent phenomenon around Long Island is the increase in wintering common eiders
A century ago, North America's common eider
population was believed to consist of just two breeding pairs, according to Brad Allen, Maine Department of Inland Fisheries and Wildlife's head bird biologist.
populations have declined sharply in areas such as the Pacific and the Arctic since the 1970s.
But neither of these beautiful species of duck can compete with the common eider
when it comes to providing soft plumage to make comfortable eiderdowns.
Similar patterns have also been described for the Canada Goose Branta canadensis (Alderich and Raveling 1983) and for the Common Eider
, in which the likelihood of egg or chick desertion is determined by both the female body mass and the size of the clutch (Erikstad et al.
While Kyle was embarking upon his emperor hunt, Gina was in a layout boat, hunting Pacific common eider
and other prized sea ducks in the bay.
Hyperthermia secondary to restraint or "stress-induced hyperthermia" has been well documented in several bird species, including common eider
(Somateria mollissima), Pekin ducks (Anas play-trhynchos), great tits (Parus major), pigeons (Columba livia), chickens, and 2 Amazon parrot species.
The shores of Long Island are some of the few places in New York where you can regularly see wintering sea ducks, including common eider
, harlequin duck (rare), surf scoter, white-winged scoter, black scoter, oldsquaw, bufflehead and common goldeneye.
Sea ducks, such as the common eider
, may be well adapted to cold winter conditions since their annual apparent survival rates are unrelated to winter harshness (Hario et al.
In Finland, a bird-pathogenic orthoreovirus was isolated in the same geographic region 6 years earlier from the bursa of Fabricius from common eider
(Somateria mollissima) carcasses and was suspected to be the cause of their death (10).
As we chugged along the sheltered side a party of common eider
gave wonderful views on the seaweed covered rocks.