Resources related to Ecological Regions

Stellers Eider Spring Migration Surveys Southwest Alaska 2012

The majority of the Pacific population of Steller's eiders migrates along the Bristol Bay coast of the
Alaska Peninsula in the spring, crosses Bristol Bay toward Cape Pierce, then continues northward
along the Bering Sea coast. Most then cross the Bering Strait to their breeding grounds in Siberia, with
a smaller number continuing north to the Alaska North Slope to breed (U. S. Fish and Wildlife Service
2002, Gill et al. 1978). During migration the eiders linger to feed at the mouths of lagoons and other

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

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

Alaska - Yukon Waterfowl breeding Population Survey 2011

Waterfowl breeding conditions within the survey area depend largely on the timing of spring
phenology. Relatively normal spring phenology occurred in Interior and Coastal Alaska in 2011.
Overall, waterfowl production is expected to be good across the survey area compared to
previous long-term (1957-2010) production.
Total duck numbers were down 28% from the previous 10-year mean, but were only down 3%
from the long-term mean (1957–2010). Dabbler ducks decreased from the previous 10-year

The role of herring spawning grounds as Marine Protected Areas for scoters (Melanitta spp.) in the Puget Sound-Georgia Basin

Scoters and other waterbirds congregate in dramatic numbers to consume Pacific herring (Clupea pallasi) spawn each spring along most of the Pacific Coast. Spawning occurs later at progressively higher latitudes, and may thus provide critical staging areas for scoters acquiring reserves as they migrate north to breed.

Trends in Duck Breeding Populations 1955–2012

This report summarizes information about the status of duck populations and wetland habitats during spring 2012, focusing on areas encompassed by the U.S. Fish & Wildlife (USFWS) and Canadian Wildlife Services’ (CWS) Waterfowl Breeding Population and Habitat Survey. We do not include information from surveys conducted by state or provincial agencies. In the traditional survey area, which includes strata 1–18, 20–50, and 75–77 (Figure 1), the total duck population estimate (excluding scoters [Melanitta spp.], eiders [Somateria spp.

Distribution patterns of wintering sea ducks in relation to the North Atlantic Oscillation and local environmental characteristics

Twelve species of North American sea ducks (Tribe Mergini) winter off the eastern coast of the United States and Canada. Yet, despite their seasonal proximity to urbanized areas in this region, there is limited information on patterns of wintering sea duck habitat use. It is difficult to gather information on sea ducks because of the relative inaccessibility of their offshore locations, their high degree of mobility, and their aggregated distributions.

Origin and Availability of Large Cavities for Barrow’s Goldeneye (Bucephala islandica), a Species at Risk

Large secondary-nesting birds such as ducks rely on appropriate cavities for breeding. The main objective of this study was to assess the availability of large cavities and the potential of a managed boreal coniferous landscape to provide nesting trees within the breeding area of the eastern population of Barrow’s Goldeneye (Bucephala islandica), a cavity-nesting species at risk in Canada.