08/25/2026
Looking Back: 2023 HPAI Outbreak
The California Condor Recovery Program in Arizona has 30 years of history behind it. But one of its most difficult chapters unfolded just a few years ago.
In March 2023, Highly Pathogenic Avian Influenza (HPAI) reached the Arizona–Utah flock. In just over a month, it claimed 21 California Condors and set recovery back a decade or more.
Outbreaks like this arrive without warning, and unlike some threats, they're largely beyond our control.
That's exactly why we focus so intently on the threats we can prevent. We may not be able to stop the next outbreak, but we can reduce preventable losses like lead poisoning, keeping the flock strong enough to withstand what we can't predict.
HPAI hasn't been detected in the flock since April 2023. Our team stays watchful, and recovery continues.
If you're just catching up, we're celebrating 30 years of California Condor recovery this year. Setbacks like this are part of the story, and all month we're revisiting the birds and milestones that made the program what it is.
Sick condor being transported 📷 Shawn Farry
Biologists rappel down a cliff to rescue a sick condor 📷 Jessy Wilson
Condor 593 deceased from HPAI 📷 Erin Brannon
Condor 593 before death 📷 Heather Morris
Avian Influenza vaccine 📷 Karine Aigner