Harlequin Duck (Histrionicus histrionicus): A Technical Conservation Assessment
Wiggins, D. (2005, October 17). Harlequin Duck (Histrionicus histrionicus): a technical conservation assessment. [Online]. USDA Forest Service, Rocky Mountain Region.
Wiggins, D. (2005, October 17). Harlequin Duck (Histrionicus histrionicus): a technical conservation assessment. [Online]. USDA Forest Service, Rocky Mountain Region.
Cooke, Wells. 1906. Distribution and Migration of North American Ducks, Geese and Swans. United States Department of Agriculture Bulletin. No. 26. 46 pp.
The purpose of the study was to gain a greater understanding of locations and behaviors of wintering sea ducks when they return each evening. The goal of the study was to identify the nighttime roosting location and behavior of the Long Tailed Duck. In particular any commuting movements in the sound and if so the height of flight. While focusing on Long-Tailed Ducks, night time observations of Eiders and Scoters were also to be included in this study.
As constituted here, the tribe Mergini includes all the species which Delacour and Mayr (1945) originally placed in the group.
Delacour later (1959) removed the four species of eiders and placed them in a separate tribe, Somateriini, between the dabbling ducks and
pochards. This was done apparently as a result of Humphrey's anatomical studies (1955, 1958), which suggested that the eiders might
Anonymous. 2011 Bibliography of Mergus serrator - Linnaeus, 1758 (Red-breasted Merganser ) in Deomurari, A.N. (Compiler), 2010. AVIS-IBIS (Avian Information System - Indian BioDiversity Information System) v. 1.0. Foundation For Ecological Security, India retrieved on 11/10/2011
Anonymous. 2011 Bibliography of Clangula hyemalis - Linnaeus, 1758 (Long-tailed Duck ) in Deomurari, A.N. (Compiler), 2010. AVIS-IBIS (Avian Information System - Indian BioDiversity Information System) v. 1.0. Foundation For Ecological Security, India retrieved on 11/10/2011
Anonymous. 2011 Bibliography of Bucephala clangula - Linnaeus, 1758 (Common Goldeneye ) in Deomurari, A.N. (Compiler), 2010. AVIS-IBIS (Avian Information System - Indian BioDiversity Information System) v. 1.0. Foundation For Ecological Security, India retrieved on 11/10/2011
The Centre for Wildlife Ecology has several studies underway that address conservation issues affecting sea ducks along the Pacific coast. The issues, species, and populations being studied are shared concerns of the Centre for Wildlife Ecology, the Canadian Wildlife Service, and agency and academic collaborators throughout North America.