Resources related to Zones of Temperature

Behaviour and Ecology of Sea Ducks

Sea Ducks have been marginalized in Waterfowl conservation and management programs as most attention has been focused on the "sport ducks" notably mallards. In fact much of our understanding of the demography and harvest of ducks is based on the mallard model. Preceived lack of interest in the Sea Ducks had led to liberal management of this group. Large harvests in Southern areas and intense subsistence use in the North have proved a dangerous combination.

Wintering Snowy Owls feed on Sea Ducks in the Belcher Islands, Nunavut, Canada

j. Raptor Res. 37(2):164-166¸ 2003 The Raptor Research Foundation, Inc.
Short Communications
While studying the ecology of sea ducks wintering around the Belcher Islands, we
also recorded Snowy Owls (Gilchrist and Robertson 2000). Herein, we expand on
our observations of Snowy Owls, describing their distribution and their relationship
w•th wintering Common Eiders (Somateria mollissima) and Long-tailed Ducks (Clangula hyemalis).

Atlantic and Great Lakes Sea Duck Migration Study

This study is a large scale, multi-year, collaborative project that will use satellite telemetry to document annual migration patterns and habitat use. Driven by a lack of knowledge on sea duck distribution, migration patterns, and seasonal habitats used, the Sea Duck Joint Venture (SDJV) partnership has launched a large-scale satellite telemetry study of sea ducks in the Atlantic Flyway. From 2009 to 2013, about 300 transmitters will be deployed in four species: Black Scoter, Surf Scoter, White-winged Scoter, and Long-tailed Duck - all species of high conservation concern.

Techniques for Determining the Availability of Food Items to Seaducks Wintering on the Chesapeake Bay, Maryland

Introduction: Historically, the Chesapeake Bay has been a major wintering area for seaducks. Based on aerial surveys, three species of seaducks, surf scoters (Melanitta perspicillata), black scoters (Melanitta nigra), and long-tailed ducks (Clangula hyemalis), have shown major declines in recent years. One possible explanation for this decline is a reduction of available food items.Data indicates that surf and black scoters likely feed at depths ranging from 10 to 30 feet in the mesohaline region of the Chesapeake Bay.

Sea Duck Ecology - Investigating the wintering ecology of surf scoters and long-tailed ducks

North American populations of breeding surf scoters and long-tailed ducks appear to be decreasing. Along the Atlantic coast, wintering populations of surf scoters are suspected to be decreasing, while the status of wintering populations of long-tailed ducks remains unknown. These trends have led conservation organizations to assign a "high" relative conservation priority to both species.

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