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Bibliography Note: |
Includes bibliographical references (page 10). 5 |
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Contents: Results and Discussion |
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Contents: Acknowledgements. |
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Summary, Etc. Note: |
Abstract: The relationships between canvasback (Aythya valisineria) breeding, wintering, and harvest areas were examined by analyzing banding data. Although canvasbacks wintering throughout North America come from the same general production areas, those wintering on the Pacific coast have a stronger relationship to western production areas, notably Alberta, than those wintering on the east coast, which come primarily from Manitoba and Saskatchewan. East and west coast wintering populations have different harvest patterns. The west coast population is harvested in relatively few areas, and the kill is more heavily concentrated on the wintering grounds. Canadian harvests of the west cost wintering populations are concentrated in Alberta, while those of the east coast wintering population are concentrated in Manitoba. |
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Additional Physical Forms: |
Online version: Geis, Aelred D., 1929- Breeding and wintering areas of canvasbacks harvested in various states and provinces. Washington : U.S. Dept. of the Interior, Fish and Wildlife Service, 1974 (OCoLC)608657696 |