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Jackie the Bald Eagle's Cause of Death Revealed

The necropsy found the virus caused severe stomach ulceration, internal bleeding and bacterial sepsis in the bald eagle, officials said.

  • On Wednesday, the California Department of Fish and Wildlife announced that highly pathogenic avian influenza was the primary underlying cause of death for Jackie, the bald eagle from Big Bear Valley.
  • Experts identified an uncommon presentation of the virus that caused a severe stomach ulcer, leading to persistent internal bleeding, anemia, and fatal bacterial sepsis.
  • Testing ruled out West Nile virus as a factor, while toxicology screening detected brodifacoum in her liver; investigators determined it was not the primary cause of illness.
  • Following established procedures to prevent HPAI transmission, the U.S. Fish and Wildlife Service's National Eagle Repository cremated Jackie's remains, while officials confirmed her mate Shadow shows no signs of illness.
  • CDFW Director Meghan Hertel noted the eagle's story reflects the powerful connection people feel to these iconic birds, with fans honoring her legacy at recent events like Wings Over Big Bear.
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17 Articles

Krem2 NewsKrem2 News
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Jackie the bald eagle's cause of death revealed

Jackie, a beloved bald eagle from Big Bear's famous pair, died in August. A necropsy has revealed her cause of death.

·Spokane, United States
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LA Daily NewsLA Daily News
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Necropsy finds famed Big Bear bald eagle Jackie died after ‘complex and unusual disease process’

Highly Pathogenic Avian Influenza was described as the primary underlying cause of her decline.

·Los Angeles, United States
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Detroit Free Press broke the news in Detroit, United States on Wednesday, October 14, 2026.
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