Geometric mean (range) of Pb and Al concentrations (in µg/g dry weight) in greylag geese and purple gallinule feces, and samples of sediment collected at different study sites in Doñana during the 2004 to 2008 winters.

Data from 2001/2002 previously described [24] are included.*Data from [24]; †nd = below detection limit.‡Means sharing a superscript letter were not significantly different among seasons for each locality for feces and between sites for sediments (p>0.05).