The Royal Society for the Protection of Birds (RSPB) Scotland launched an appeal to find the birds, which were featured as chicks in the first series of the nature programme.
One of the birds, named Itchy, has now been found breeding with an untagged adult female.
Advertisement
Hide AdAdvertisement
Hide AdDave Sexton, RSPB Scotland's Mull officer, added: "This is the breakthrough we've been waiting for."