BIG BEAR VALLEY, California: Jackie, the beloved bald eagle who captured the hearts of millions of wildlife enthusiasts through livestreams of her nest in Southern California, died from complications associated with highly pathogenic avian influenza, commonly known as bird flu.
The California Department of Fish and Wildlife announced the findings on October 14, 2026, following a detailed necropsy and additional laboratory testing conducted in partnership with the San Diego Zoo Wildlife Alliance and the Ojai Raptor Center.
Jackie died on August 9, 2026, while receiving intensive veterinary care at the Ojai Raptor Center. Although specialists had been treating her for several serious medical problems, the examination of her remains provided a clearer explanation of what had caused her condition to deteriorate.
Veterinary pathologists determined that the bird flu infection was the primary underlying cause of her decline. In an unusual manifestation of the disease, the infection contributed to a severe ulcer in her stomach, resulting in persistent internal bleeding, severe anemia, and a secondary bacterial infection.
The findings also addressed questions about rat poison detected in her body. Although toxicology testing found an anticoagulant rodenticide in her liver, officials said the examination did not identify it as the primary cause of her illness or death.
Jackie’s death marked the loss of a widely recognized wild bald eagle whose nesting activities had connected people around the world with wildlife conservation.
What Caused Jackie the Eagle’s Death?
According to the California Department of Fish and Wildlife, highly pathogenic avian influenza was the primary underlying cause of Jackie’s decline and death.
The diagnosis followed a necropsy, an examination of an animal’s body after death, alongside extensive laboratory and toxicology testing.
The examination revealed that the infection was associated with a severe ulcer in the ventriculus, the muscular part of a bird’s stomach commonly known as the gizzard. The damaged tissue contributed to persistent internal bleeding and a continuing loss of blood.
This blood loss caused severe anemia, a condition in which the body does not have enough healthy red blood cells to carry oxygen effectively. The damaged stomach tissue also allowed bacteria to enter the body, leading to bacterial sepsis, a serious and potentially life-threatening response to infection.
Veterinary specialists additionally found severe inflammation and blood clot formation in Jackie’s heart and several major blood vessels.
The combination of these interconnected medical problems ultimately led to her deterioration.
Key Facts About Jackie the Eagle’s Death
| Detail | Confirmed Information |
|---|---|
| Name | Jackie |
| Species | Bald eagle |
| Known location | Big Bear Valley, California |
| Date of death | August 9, 2026 |
| Location at death | Ojai Raptor Center, California |
| Primary underlying cause | Highly pathogenic avian influenza |
| Major complication | Severe ulcer affecting the stomach’s muscular portion, or gizzard |
| Other complications | Internal bleeding, severe anemia, bacterial sepsis, inflammation, and blood clots |
| Rat poison detected | Brodifacoum, an anticoagulant rodenticide |
| Was rat poison identified as the primary cause? | No |
| West Nile virus testing | Negative |
| Heavy-metal testing | Levels, including lead, were within acceptable limits |
| Necropsy conducted by | San Diego Zoo Wildlife Alliance veterinary pathologists |
| Remains | Cremated through the U.S. Fish and Wildlife Service’s National Eagle Repository |
| Longtime mate | Shadow |
How Bird Flu Damaged Jackie’s Health
Highly pathogenic avian influenza is an infectious disease that primarily affects birds. It has circulated among wild bird populations across the United States and can cause severe illness in susceptible species.
According to wildlife officials, eagles and other birds of prey may become infected through contact with infected birds or by consuming contaminated prey.
In Jackie’s case, the infection presented alongside several serious medical complications.
The necropsy found evidence of chronic disease affecting the ventriculus, the muscular section of her stomach. The ulcerated tissue contributed to ongoing blood loss, making it difficult for her body to maintain healthy red blood cell levels.
The damaged tissue also created a pathway for bacteria to enter her body. This resulted in a secondary bacterial infection that further complicated her condition.
Follow-up testing detected genetic material from the avian influenza virus in several tissues throughout her body, including the affected stomach tissue.
Steve Kubiski, director of disease investigations at the San Diego Zoo Wildlife Alliance, explained in the official announcement that the virus had caused an unusual pattern of illness involving the severe stomach ulcer, internal bleeding, anemia, and bacterial sepsis.
These findings helped specialists connect the medical problems observed while Jackie was receiving treatment.
Jackie Was Already Seriously Ill Before Her Death
Jackie’s final weeks were marked by intensive veterinary treatment as specialists attempted to understand and manage her deteriorating health.
The California Department of Fish and Wildlife reported that she was found grounded near Big Bear Lake and admitted to the Ojai Raptor Center on July 18, 2026.
An initial examination revealed that she was thin and dehydrated. Veterinarians also identified severe anemia, low blood protein levels, and abnormalities involving her kidneys and lungs.
Her medical team pursued additional diagnostic tests and provided treatment as her condition changed. At one stage, she received a blood transfusion from another eagle to address her anemia.
Despite periods of temporary improvement, her health continued to decline. In the days before her death, she experienced additional complications, including a large blood clot in her wing and another in her kidney.
She died during the overnight hours of August 9 while receiving intensive care.
At the time, specialists were still working to determine the underlying causes of the various problems affecting her. The subsequent necropsy and laboratory testing provided the additional evidence needed to identify avian influenza as the primary underlying cause.
Was Rat Poison Responsible for Jackie the Eagle’s Death?
One of the major questions following Jackie’s death concerned whether exposure to rat poison had contributed to her illness.
Toxicology testing detected brodifacoum in her liver. Brodifacoum is an anticoagulant rodenticide, meaning it interferes with the body’s ability to form blood clots and can cause serious bleeding in animals exposed to sufficient amounts.
However, the presence of the chemical did not establish that it caused Jackie’s death.
According to the California Department of Fish and Wildlife, the necropsy did not find the uncontrolled bleeding typically associated with anticoagulant rodenticide poisoning. Officials therefore did not identify brodifacoum as the primary cause of her illness or death.
Instead, the investigation identified highly pathogenic avian influenza as the primary underlying cause, with the resulting stomach ulcer, internal bleeding, anemia, and bacterial sepsis contributing to her decline.
The distinction is important because detecting a substance in an animal’s body does not automatically mean that the substance caused its death.
The testing also detected persistent environmental contaminants, but the official findings did not identify them as the primary cause of the disease progression.
Other Diseases Were Investigated
Veterinary specialists and wildlife officials conducted additional testing to investigate other possible explanations for Jackie’s condition.
The results showed that she tested negative for West Nile virus. Testing for heavy metals, including lead, found levels within acceptable limits that were not associated with the disease progression identified during the examination.
These results helped narrow the explanation for her decline.
The investigation involved the California Department of Fish and Wildlife, the San Diego Zoo Wildlife Alliance, the Ojai Raptor Center, the California Animal Health and Food Safety Laboratory at the University of California, Davis, and the U.S. Department of Agriculture’s National Veterinary Services Laboratory system.
Their work combined the physical examination of Jackie’s remains with laboratory analysis and toxicology testing.
The results provided a more complete picture of the serious and interconnected conditions that affected her before her death.
What Happened to Jackie’s Remains?
Following the confirmation of highly pathogenic avian influenza, officials said Jackie’s remains were cremated by the U.S. Fish and Wildlife Service’s National Eagle Repository.
The decision was consistent with established procedures intended to help prevent the transmission of avian influenza to wildlife and humans.
The National Eagle Repository serves a separate conservation and cultural purpose by providing eagle remains and parts to members of federally recognized Native American tribes for religious and cultural practices.
The handling of Jackie’s remains attracted public attention because of the strong emotional connection many people had developed with her through the Big Bear nest livestream.
Some supporters had hoped that her remains could be preserved through taxidermy. However, officials proceeded with cremation under the applicable procedures.
The decision closed one chapter of Jackie’s story while leaving behind the memories and public interest generated by years of watching her life in the wild.
Shadow Remains in Big Bear Valley
Jackie became widely known through the nest she shared with her longtime mate, Shadow, in Big Bear Valley.
For years, viewers watched the pair’s nesting activities, including the challenges of raising eaglets, enduring winter weather, and protecting their nest.
The livestreams allowed people far beyond California to observe the lives of bald eagles in their natural habitat. They also introduced many viewers to the challenges facing wildlife and the importance of protecting the environments in which these birds live.
Following Jackie’s death, wildlife officials said camera footage provided no evidence that Shadow or the eaglets were sick.
Shadow remained in Big Bear Valley, and the official update did not report evidence of illness among the birds associated with the nest.
Jackie’s loss nevertheless marked a major change for the widely followed eagle pair. For viewers who had followed their story over several years, her death was both a personal loss and a reminder that wild animals face complex health risks that are not always visible until serious illness develops.
Why Jackie’s Story Matters for Wildlife Conservation
Jackie’s death has drawn attention to the threats facing bald eagles and other birds of prey.
Although bald eagle populations have recovered significantly from earlier periods of severe decline, the species still faces risks associated with disease, environmental contamination, habitat pressures, and other hazards.
Avian influenza is particularly concerning because wild birds can encounter the virus through contact with infected animals or contaminated prey. Birds of prey may be exposed when feeding on other birds, creating opportunities for infection to spread through wildlife populations.
Jackie’s case also demonstrates why a detailed veterinary investigation can be important. Her symptoms involved multiple organ systems, and the presence of several medical problems initially made it difficult to determine the underlying cause.
By examining her tissues and conducting further testing, specialists were able to distinguish the primary disease from other findings, including the rodenticide detected in her liver.
The information may help wildlife and veterinary specialists better understand similar cases in other eagles and birds of prey.
Remembering Jackie the Bald Eagle
For many people, Jackie was more than a bird appearing on a livestream. She became a familiar presence whose daily life offered a rare opportunity to witness wildlife up close.
Viewers followed her through nesting seasons, difficult weather, and the raising of eaglets. Her story brought people together through a shared interest in nature and encouraged conversations about conservation.
The official findings now provide a clearer explanation of the illness that ended her life. Highly pathogenic avian influenza was identified as the primary underlying cause, with a severe stomach ulcer and its complications contributing to her decline.
Although the discovery of brodifacoum raised questions about possible poisoning, officials did not identify the rodenticide as the primary cause of her death.
Jackie’s story has ended, but the interest she inspired in bald eagles, wildlife rehabilitation, and habitat protection continues.
Disclaimer
This article is based on findings published on October 14, 2026, by the California Department of Fish and Wildlife in partnership with the San Diego Zoo Wildlife Alliance and the Ojai Raptor Center. The reported cause of death reflects the results of the necropsy and additional diagnostic testing. Although brodifacoum was detected in Jackie’s liver, officials did not identify it as the primary cause of her illness or death. This article does not make claims about the source of the rodenticide or suggest intentional poisoning.