American black duck summer range versus winter range: a dichotomy of riches

Held in Grasonville, Maryland, October 4, 2000. Symposium dedicated to Veron D. Stotts. OCLC: 51171874 PDF on file: see 6039_Perry.pdf 1.3 MB also 6039_Perry_searchable.pdf 5 MB
Edited by: Matthew C. Perry


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The status of the American black duck (Anas rubripes) population has more often been attributed to a single event than to multiple events over time and throughout space. The difference in the quality of the habitat, however defined, within breeding areas in the North and in the southerly wintering areas, especially Chesapeake Bay, also has been proposed as affecting black duck status. The obvious question is 'What variable cuts across all habitats, time, and space to affect black ducks?' This paper attempts to answer that question by examining the connectivity of seemingly unrelated variables and events associated with the black duck's summer range and its winter range relative to population change. Insights from examples of relations among these variables reveal how results may be confounded and even misleading. A perspective that may be required to ensure future black duck populations is discussed.
Publication type Book chapter
Publication Subtype Book Chapter
Title American black duck summer range versus winter range: a dichotomy of riches
Year Published 2002
Language English
Publisher U.S. Geological Survey
Publisher location Reston, Va.
Contributing office(s) Patuxent Wildlife Research Center
Description vii, 44
Larger Work Type Book
Larger Work Subtype Other Government Series
Larger Work Title Black Ducks and Their Chesapeake Bay Habitats: Proceedings of a Symposium
First page 7
Last page 11
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