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Xinhua News Agency, Beijing, Feb.
According to the US "Science" magazine reported on the 17th, researchers from the US non-profit organization Science Conservation Global Organization measured the lead levels of 1,210 bald eagles and golden eagles between 2010 and 2018 and found that 46% were distributed in 38 US states.
Modelling analysis showed that lead poisoning can reduce the number of bald eagles and golden eagles by 3.
Previous studies have shown signs of lead poisoning in bald eagles and golden eagles in parts of the United States, but this study shows that the situation is widespread across the United States, according to the Associated Press
The researchers found that the two birds had more lead poisoning during the fall and winter hunting seasons, possibly because they ate the carcasses of animals hit by lead bullets
The wildlife department encourages hunting with lead-free steel bullets, but the practice of hunting birds and large game with lead bullets remains common, according to the Associated Press
Bald eagles were on the brink of extinction in the 1960s, in part because of the widespread use of the pesticide DDT, which ran into waterways, contaminating fish, which in turn endangered the bald eagles, which feed on fish
