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Estimation of confidence intervals for federal waterfowl harvest surveys

January 1, 1990

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.

Publication Year 1990
Title Estimation of confidence intervals for federal waterfowl harvest surveys
Authors P.H. Geissler
Publication Type Article
Publication Subtype Journal Article
Series Title Journal of Wildlife Management
Index ID 5222396
Record Source USGS Publications Warehouse
USGS Organization Patuxent Wildlife Research Center