Shot Ingestion by Dabbling Ducks Wintering in Coastal South Carolina
|Author:||Brian T. Gray, D. H. Gordon, and T. Strange|
|Citation:||Proc. Annu. Conf. Southeast. Assoc. Fish and Wildl. Agencies 42:368-375|
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We determined the incidence of lead, steel, and total Shot ingestion in 4 species of dabbling ducks on a major wintering area of the Atlantic Flyway. Gizzards (N = 1,771) were collected from hunter-harvested mallards (Anas platyrhynchos) , northern pintails (A. acuta), blue-winged teal (A. discors), and American greenwinged teal (A. crecca) during the 1985-86,1986-87, and 1987-88 waterfowl hunting seasons on the Santee River Estuary (SRE), South Carolina. Total Shot ingestion rates were high in northern pintails (15.9%) and mallards (8.4%), and low in American green-winged teal (1.3%) and blue-winged teal (0.8%). Because gizzard analysis can underestimate the extent of lead shot exposure in waterfowl, the SRE is implicated as a serious contributor to lead Shot ingestion by wintering northern pintails and mallards.