The stricken bird was found on the Isle of Mull in a dazed state and was struggling to fly last October, and was rescued and treated by the Scottish organization SPCA under close supervision of the RSPB.
He was rounded up and released on November 6 back to the Treshnish farm where he was initially found with the help of the islanders.
Now a huge raptor, also known as a sea eagle, has been spotted on Rum Island, about 50km from where it was released, feeding on a deer carcass.
The eagle was rescued after being spotted out at sea more than 200m from the Mull shore.
Jamie Ramsay stumbled upon the bird while walking, and the next day found it huddled against a rock, wet and exhausted.
The bird was unable to budge at high tide and experts said it was only an hour away from drowning.
Jamie turned to the RSPB for help and they took the eagle to the National Wildlife Rescue Center for Scotland SPCA.
Jamie said: “I am so happy to see that the white-tailed eagle I found on the Isle of Mull has been seen alive and well on the Isle of Rum.
“I came across an eagle while walking and immediately noticed that something was wrong.
“The bird managed to get into the air, but something told me to check if it flew safely to the rock ledge.
“The eagle used its wings to swim to shore.
“The next morning I returned with the first rays of the sun and, fortunately, found him pressed against a rock, wet and obviously exhausted.
“I noticed that the eagle is below the high tide and the tide is coming back. I tried to take him to higher ground, but he seems to have lost his battle.
“The Scottish Society for the Protection of Animals was unable to attend and I was able to contact the RSPB.
“Seeing the image of that same eagle alive and happy, and most importantly in the wild, where it belongs, fills me with such joy.
“I didn’t know much about sea eagles before, but now that I know their history, I can appreciate how special this bird is.”
Sea eagles are the UK’s largest birds of prey and can have a wingspan of up to eight feet. Farmers and gamekeepers pursued them until they disappeared and deprived them of their homes.
Prior to their recent reintroduction, the birds last bred in England and Wales in the 1830s, in Ireland in 1898, and in Scotland in 1916.
The last bird bred in the UK was shot in Shetland in 1918. European populations of this bird have also suffered from severe persecution, resulting in significant decline and extinction in several countries.
But they were re-introduced in the 1970s and the sea eagles gradually re-established themselves with over 100 breeding pairs in Scotland.