A third duck has been added to the list of aquatic birds with health advisories because of mercury, but the levels of contamination in the first two species seems to have dropped. Also, state officials are analyzing samples from hundreds of fish, checking to see if additional advisories should be issued.
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Consumption advisories for the birds taken in Great Salt Lake marshes are:
• Northern shoveler and cinnamon teal: Adults should eat no more than two 8-ounce meals per month. Children, pregnant women and women who may become pregnant should eat no more than one 4-ounce meal per month of these birds.
• Common goldeneye: Children, pregnant women and women who may become pregnant should not eat them. Other adults should eat no more than one 8-ounce meal per month.
Only 5 percent of ducks taken in the past 10 years were cinnamon teals, and only 2 percent were goldeneyes. Over the past 10 years, according to the release, northern shovelers made up about 10 percent of ducks taken by Utah hunters "but that number has climbed to 26 percent during certain years." Seven other duck species also were sampled and determined to be safe to eat.
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http://deseretnews.com/dn/view/0,1249,650196269,00.html