Black Swans Die From Lead
AN OUTBREAK of lead-poisoning in waterfowl at the Bool Lagoon Game Reserve in south-eastern Australia stimulated a survey that revealed that about 40 to 50 percent of black swans had excessive exposure to lead. The source is believed to be spent lead shot from hunting. Although this is the first detailed report on lead poisoning and lead contamination in Australian waterfowl, it is believed similar problems exist undetected elsewhere in Australia. The same conditions exist for poisoning waterfowl in New Zealand as in Australia, the US and UK, where testing of ducks has shown higher levels of lead. The alternative is steel shot, used extensively in the United States. There is little cost difference between lead and steel shot.
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https://paperspast.natlib.govt.nz/periodicals/FORBI19900801.2.8.3
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Forest and Bird, Volume 21, Issue 3, 1 August 1990, Page 6
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124Black Swans Die From Lead Forest and Bird, Volume 21, Issue 3, 1 August 1990, Page 6
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