Resources related to Reproduction

To fly or not to fly: high flight costs in a large sea duck do not imply an expensive lifestyle

A perennial question in ornithology is whether flight has evolved mostly to facilitate access to food or as an anti-predator strategy. However, flight is an expensive mode of locomotion and species using flight regularly are associated with an expensive lifestyle. Using heart rate (HR) data loggers implanted in 13 female common eiders (Somateria mollissima), our objective was to test the hypothesis that a high level of flight activity increases their energy budget.

To fly or not to fly: high flight costs in a large sea duck do not imply an expensive lifestyle

Implications of Demographic Uncertainty for Harvest Management of North American Sea Ducks

In 2010, the Sea Duck Joint Venture (SDJV) identified the need for improved science support for harvest and habitat management of North American sea ducks.
In order to prioritize monitoring and research needs in support of harvest management, we applied a Prescribed Take Level (PTL) framework to assess the influence of uncertainty about sea duck demographic
parameters on comparisons of observed and allowable harvest estimates. We focused on 7 populations of North American sea ducks: the American subspecies of common eider (Somateria mollissima dresseri

Implications of Demographic Uncertainty for Harvest Management of North American Sea Ducks

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

2016 Kodiak Island Cooperative Goldeneye Nest Box Project Progress Report

Executive Summary
During the period 15 May to 6 August, 2016, nest boxes located at eight different lakes on the Kodiak road system and Karluk Lake on the Kodiak National Wildlife Refuge were checked by the author(s). Aurel Lake nest box AL-1 had the door blown off and Karluk Lake box KL-17 tree blew down reducing the total number of project boxes available in 2016 to 45.

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

2015 Kodiak Island Cooperative Goldeneye Nest Box Project

During the period 12 May to 20 Sept, 2015, nest boxes located at eight different lakes on the Kodiak road system and Karluk Lake on the Kodiak National Wildlife Refuge were checked by the author(s). Three of the original 8 Buskin Lake boxes were moved to new locations on Buskin Lake in 2015. Also another new road system nest box was added at Nyman Lake, located on the U.S. Coast Guard base in 2015. However, Lake Rose Tead nest box, RT-1, was taken down, keeping the total number of Project boxes available in 2015 at 47.

2014 Kodiak Island Cooperative Goldeneye Nest Box Project

During the period 26 May to 6 Aug, 2014, nest boxes placed on seven different lakes along the Kodiak road system and Karluk Lake on the Kodiak National Wildlife Refuge were checked by the author(s). Two new road system nest boxes were added in 2014. One was added to Buskin Lake on 5 Feb, and another box placed on Aurel Lake 1 April. Both lakes were still ice covered. The added boxes increased the total number of Project boxes available in 2014 to 47 nest boxes.

Pages