The zoo says postmortem testing found Flaco was infected with a virus due to eating feral pigeons which had become part of his diet.
[Ads /]
It also found he was exposed to four different kinds of rat poison.
Flaco died last month after he either fell or crashed into a building.
Experts say Flaco's underlying conditions may have caused him to crash, and would have ultimately caused his death had he not crashed.
[Ads /]
The Eurasian eagle owl rose to fame after he escaped from the Central Park Zoo in February of last year after vandals damaged his enclosure.
----------
* Get Eyewitness News Delivered
* More New York City news
* Send us a news tip
* Download the abc7NY app for breaking news alerts
* Follow us on YouTube