In a recent wildlife report it was shown that birds tested in the period winter 2010 to winter 2011 were found that elevated levels of lead (i.e. >20.0 μg/dL) were found in the blood of 34 % (n = 285) of waterbirds tested at four sites in Britain during the 2010/2011 winter this happening during some of the largest radioactive releases from nuclear power plants and medical reactors.
In this study, we examined data on current and historical trends in lead poisoning in British waterbirds and related these to the introduction of legislation restricting the use of lead. Our results indicate that lead poisoning has continued to affect a wide range of British waterbirds long after legal restrictions were introduced.
Of course, it could be argued that existing lead weights might be the cause of this anomaly but the main effected bird species prone to lead weight poisoning was the swans.
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