10,000 dead geese die in poisoned lakes in the United States

The bodies of 10,000 snow geese were discovered in a lake filled with heavy metals and sulfuric acid near the copper mine in Montana, USA.

The Environmental Protection and Montana Resources Agency (EPA) found about 10,000 snow geese died in lakes filled with heavy metals and sulfuric acid formed in the Berkeley Pit open-pit mine in Butte, Montana, USA, Independent on now reported.

About 10,000 dead geese were discovered in the lake in Butte, Montana.(Photo: AP).

Authorities use a gun to fire code bullets to try to chase away the geese from poisoned lakes.(Photo: Billingsgazette).

"About 25,000 geese flock landed in this area on November 28. This is the largest number of birds we have seen in the last 21 years. Workers have tried their best to save them. There are still many children swimming in the cellar, "said Mark Thompson, an environmental manager at Berkerly Pit copper mine.

Montana Resource Company, which manages the lake, collected 20 geese corpses to analyze the cause of their deaths.

Snow geese are on the list of endangered animals in the early 20th century. In 1995, more than 300 geese died after drinking contaminated water in Berkeley Pit. Later test results showed heavy metal in their kidneys.