Concentrations of lead (Pb) and cadmium (Cd) were determined in breast muscle, liver, and kidney of adult scaups (Aythya marila) wintering in the Polish part of Szczecin Lagoon (southwestern Baltic) in 2002 (n=17) and 2004 (n=17). Significant discrepancies were observed for Cd, but not Pb concentrations in all the tissues between 2002 and 2004. Geometric means of Pb levels were calculated for all the analyzed birds (except one, n=33). Concentrations of Pb were similar in muscle, liver, and kidney (2.29, 2.38, 2.55 mg/kg dry weight, dw, respectively). Concentrations of Cd in the examined materials differed significantly (muscle, liver, kidney 0.27, 2.59, 10.31 mg/kg dw, respectively). Performed analysis of Pb and Cd concentrations in these eatable parts of duck showed exceeded maximum levels of toxic metals determined for foodstuffs in EU document No. 1881/2006. Concentrations exceeding maximum levels were detected in 65-100% of the samples (depending upon the examined material), most frequently in the case of Pb in the muscle.