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Estimation of confidence intervals for federal waterfowl harvest surveys

Journal of Wildlife Management

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Abstract

I developed methods of estimating confidence intervals for the federal waterfowl harvest surveys conducted by the U.S. Fish and Wildlife Service (USFWS). I estimated flyway harvest confidence intervals for mallards (Anas platyrhynchos) (95% CI are .+-. 8% of the estimate). Canada geese (Branta canadensis) (.+-. 11%), black ducks (Anas rubripes) (.+-. 16%), canvasbacks (Aythya valisineria) (.+-. 32%), snow geese (Chen caerulescens) (.+-. 43%), and brant (Branta bernicla) (.+-. 46%). Differences between annual estimate of 10, 13, 22, 42, 43, and 58% could be detected with mallards, Canada geese, black ducks, canvasbacks, snow geese, and brant, respectively. Estimated confidence intervals for state harvests tended to be much larger than those for the flyway estimates.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Estimation of confidence intervals for federal waterfowl harvest surveys
Series title:
Journal of Wildlife Management
Volume
54
Issue:
2
Year Published:
1990
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
201-205
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Wildlife Management
First page:
201
Last page:
205