03/08/2015 03:11 EDT | Updated 05/08/2015 05:59 EDT

Exhausted bald eagle dies after fishing boat rescue caught on YouTube

A bald eagle rescued by a Vancouver Island fisherman, who found the exhausted bird floundering in the ocean near Nanoose Bay, has died.

The eagle's rescue was caught on video back in September, and shows the tired, juvenile bird appearing to swim toward the sport fishing boat before being helped aboard by fisherman Don Dunbar.

The Orphaned Wildlife Rehabilitation Society in Delta, which had been caring for the eagle, said it died Wednesday night. Preliminary results show the bird died from a probable virus in the brain.

The bird had been too exhausted to fly when it was brought to the society, which reported the malnourished animal ate a whole quail upon arrival at its facility.