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The Big Story

How bald eagles returned to the Great Lakes

Jun 21, 2024
Explore the successful conservation efforts that brought bald eagles back to the Great Lakes region, overcoming historical challenges from hunting and DDT. Learn how scientists and volunteers worked to protect and monitor the eagles, leading to their removal from the endangered species list. Discover the importance of collaborative conservation efforts in reviving iconic species and combating environmental threats like climate change.
16:40

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Quick takeaways

  • Recovery of bald eagles linked to banning of DDT and dedicated conservation efforts.
  • Bald eagle population resurgence in Great Lakes region highlights success of coordinated conservation actions.

Deep dives

Threats to Bald Eagles - Past and Present

Bald eagles faced severe threats in the late 1800s and early 1900s due to overhunting for their feathers, leading to a rapid decline in their population. A significant decline occurred again in the 1960s due to widespread use of the pesticide DDT, which not only resulted in immediate eagle deaths but also weakened eggshells, causing reproductive issues. The banning of DDT in the 1970s and 1990s, after a ten-year awareness campaign, led to the beginning of their recovery, with their removal from the endangered species list in Canada.

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