RILEY, once a beacon of hope for Philippine Eagle conservation efforts, passed away on April 15, 2025, due to complications from a rare bone condition that made the bird's skeletal structure dangerously fragile.
According to the Philippine Eagle Foundation (PEF), Riley’s health began to decline on April 12 when keepers noticed the chick’s right wing had drooped and it appeared to be in pain. X-ray results later confirmed fractures in the wing joint, which were likely caused by metabolic bone disease — a condition that weakens the bones and may also compromise the immune system.
Despite intensive treatment and round-the-clock care from veterinary staff at the National Bird Breeding Sanctuary in Davao City, Riley’s condition deteriorated rapidly.
PEF said the young eagle developed inflammation and breathing problems and died three days later. A necropsy confirmed the presence of metabolic bone disease and a possible underlying infection.
Though the sanctuary is not open to the public, Riley had garnered a following online and became a symbol of hope through the Philippine Eagle Foundation’s social media platforms.
PEF sad the loss has deeply affected both the conservation community and supporters who had watched Riley grow from a hatchling into a juvenile eagle.
The Foundation said Riley had been raised under the same health and nutrition protocols used for other healthy eagles, but the bird’s condition has prompted a thorough review of current care standards to help prevent similar cases in the future.
PEF expressed gratitude to those who followed Riley’s journey and to the dedicated staff who cared for the bird.
“Though Riley’s life was short, Riley served as a powerful reminder of the value of every single eagle and the urgency of our mission,” the Foundation said.
Its legacy, they added, will serve as an inspiration for renewed and strengthened conservation efforts to protect the critically endangered Philippine eagle — one of the rarest birds of prey in the world.
Riley's hatching marked a historic milestone as the first-ever documented unassisted natural hatching, highlighting the resilience of PEF’s conservation efforts.
On November 29, 2024, Chick No. 30, a 17-day-old male Philippine eagle, also passed away at the National Bird Breeding Sanctuary (NBBS).
The chick, which was the offspring of Sinag and Pin-pin, initially showed normal behavior but developed respiratory issues on November 26, including labored breathing and sneezing.
Chick No. 30 is the first-ever Philippine eagle chick to hatch at the NBBS. It was also produced through cooperative artificial insemination.
Despite receiving immediate treatment, including oxygen therapy and fluid suctioning, his condition deteriorated, and resuscitation efforts were unsuccessful, the PEF added.
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