Maglor/Elwing, "The Trumpet of the Swan"
Years after the sinking of Beleriand, Elwing still flies out to see Middle Earth. On the beach, she sees Maglor who is a gross hermit now and so faded and skanky he can’t speak or sing. Elwing is moved by pity and by a desire to hear of her son’s childhoods and nurses him back to health by regurgitating raw fish into his mouth or something, to be honest there’s a limited amount of nursing a bird can do. Maglor slowly regains his voice but is terrified that once he starts to speak, his new love will leave him and so he stays silent.
One day he sees Elwing soaring above the sea with the sunlight gilding her wings and is so moved that he can’t help but sing a paean to her beauty. He tells her everything she wants to know and confesses his love at which point she leaves him because she is married and also a bird.
Maglor is still comforted every time he hears the tuneless, raucous trumpeting of the swans.