Resources related to Reproductive Strategy

Habitat Features Associated with Barrow's Goldeneye Breeding in Eastern Canada

We investigated environmental variables linked to presence of Barrow's Goldeneye (Bucephala islandica) pairs from the eastern North American population on 412 lakes of the Sainte-Marguerite River watershed, Québec, Canada. We analysed habitat relationships at two spatial scales (i.e., considering all lakes surveyed and high elevation lakes only) and predetermined the high elevation lakes as those including 90% of Barrow's Goldeneye occurrences. Barrow's Goldeneye were found on 59 lakes, all of which were ≥490 m elevation (maximum = 822 m) with 90% at ≥610 m.

Habitat Features Associated with Barrow's Goldeneye Breeding in Eastern Canada

Common Eider Duckling Survival Study

The Gulf of Maine is changing, and wildlife species that breed, nest, raise young and winter there have faced considerable
change in recent years. This was no more evident than in 2012 when ocean temperatures rose an incredible two
degrees, setting the wheels in motion for significant changes in complex marine food webs. Common eider populations,
too, must adapt to a significantly altered food web, as numerous studies report widespread losses of the once-abundant

Common Eider Duckling Survival Study

Body Composition Dynamics of Common Eider During Winter: An Application of the Deuterium Dilution Method

The nearshore and offshore waters of southern New England provide some of the most
important wintering habitat for sea ducks in North America. Understanding changes in sea duck body
composition during winter could provide insights into current habitat quality and potential effects of
anthropogenic disturbances on the body condition of sea ducks. We used the deuterium dilution method, a
nonlethal approach, to investigate intraseasonal variation and differences between genders in body

Body Composition Dynamics of Common Eider During Winter: An Application of the Deuterium Dilution Method

Sea Duck Joint Venture Implementation Plan 201 5 - 201 7

PRIORITIES 2015–2017 Priorities set out in this Implementation Plan are designed to help meet the SDJV mission,
which is to “...promote the conservation of all North American sea ducks through partnerships by providing greater
knowledge and understanding for effective management.”
The 2014-2018strategic plan reflects a significant shift in focus for the SDJV, from a broad-based science program
to a more focused program intended to provide information most needed by managers to make informed

Sea Duck Joint Venture Implementation Plan 2015 - 2017

Sea Duck Joint Venture Strategic Communications Plan 2015-2019

The mission of the Sea Duck Joint Venture(SDJV)is to promote the conservation of North American sea ducks through partnerships by providing greater knowledge
and understanding for effective management. SDJV focuses on the 15 species of North American sea ducks on their coastal water habitat for migration and wintering as well as boreal forest and tundra habitat for nesting. Since the JV’s founding in 1998, the four pillars of its work have included science, communications, funding, and conservation.

Sea Duck Joint Venture Strategic Communications Plan 2015-2019

Wintering Sea Duck Distribution Along the Atlantic Coast of the United States

Although monitoring data for sea ducks (Tribe Mergini) are limited, current evidence suggests that four of the most common species wintering along the eastern coast of the United States—long-tailed duck Clangula hyemalis, white-winged scoter Melanitta fusca, surf scoter Melanitta perspicillata, and black scoter Melanitta americana—may be declining, while the status of American common eider Somateria mollissima dresseri is uncertain.

Wintering Sea Duck Distribution Along the Atlantic Coast of the United States

Monitoring Beaufort Sea Waterfowl and Marine Birds Aerial Survey Component

The U.S. Department of Interior investigated potential disturbance effects of human
activities on the distribution and density of Long-tailed Ducks (Clangula hyemalis), and eiders
(Somateria spp.) in lagoons and offshore waters of the south-central Beaufort Sea. The primary
objectives of this study were to compare Long-tailed Duck population trends between
“industrial” and “control” areas, describe the relationship between bird density and human activities, and document distribution patterns of eiders and other marine birds in the south-central

Monitoring Beaufort Sea Waterfowl and Marine Birds Aerial Survey Component

Waterfowl Breeding Population Survey Coastal Plain Alaska 2011

Waterfowl breeding population surveys have been completed annually on the Arctic Coastal Plain of
Alaska since 1986. Methods for the 2011 Arctic Coastal Plain Waterfowl Breeding Population Survey (ACP
survey) were similar to those employed since 2007, when a single survey was implemented to address objectives of
two pre-existing surveys: the geographically comprehensive 1986 ACP survey conducted in mid-June to early July,
and the geographically limited 1992-2006 North Slope Eider Survey, conducted in early to mid June to target the

Waterfowl Breeding Population Survey Coastal Plain Alaska 2011

Population Ecology of Pacific Common Eiders on the Yukon Kuskokwim Delta, Alaska

Knowledge of ecological factors that influence birth, death, immigration, and emigration provide
insight into natural selection and population dynamics. Populations of Pacific common eiders
(Somateria mollissima v-nigrum) on the Yukon-Kuskokwim Delta (YKD) in western Alaska declined by
50-90% from 1957 to 1992 and then stabilized at reduced numbers from the early 1990’s to the
present. This study investigates the primary underlying processes affecting population dynamics of

Population Ecology of Pacific Common Eiders

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