Based on the story, you can't even guess the title, "The Robot and the Bluebird" by David Lucas. Deathfic, it's kinda sad. It's not gory though. Just a little idea that I had in my mind that I decided to give some life too.
A tin man sat atop a mountain. He had long since been down. He was once hailed a hero. Now he was nothing more than a legend. He had once been around to look after the kids of his friends, and their kids and their kids. Until they forgot that he still existed. Everyone thought that time had caught up with him and rusted his gears away. High atop the mountain, he sat, a broken heart in tow. Guarding over the headstones of his fallen comrades. If one were to venture all the way up their they could have read them.
"Lloyd Garmadon, Kai Smith, Nya Smith, Cole Brookstone, Jay Walker"
He was cursed to live forever. His gears were rusty, his programming outdated. He stayed there in the long dark nights and pelting rain. He stayed there in the howling winds and falling leaves. And he stayed there in the snow. But one day there was a falcon. It was struggling against the wind and snow.
"Hello, my feathered friend." The robot said his voice wavering from under-use, "What are you doing here?"
"I am flying South. To where the Sun shines." The bird said, pointing its beak on the general direction.
"But my wing is hurt and I am too tired to continue." The bird replied flopping down on his shoulder.
"You are welcome to stay here. It's been forever since I've had a friend." The robot replied.
"Thank you." The Falcon said, snuggling up closer to him.
The robot could feel the bird shivering still. It's tiny heart beating next to his neck. Each breath it took that made its chest raise up and down.
"Here," The robot said, opening a latch.
It creaked open, having not been opened for centuries.
"There is plenty of room. Most of the parts are gone or fallen into a heap. It's strange that I still keep going." The robot gently, "You may sleep here if you like."
The falcon flew off his shoulder and into his chest. He could feel it snuggled up between his wires and gears. He could feel the heart beating in his chest. A warm living beating heart. Something he had never had. The next morning, the latch to the chest compartment reverberated with the singing of the falcon. It wasn't the prettiest song, but it was the first song he had heard in a while. And so the robot made a decision. He would carry the bird South.
"I can carry you South." He said, "I will carry you when you are tired. I will offer you protection when you are cold and the weather tries to get to you."
"I would like that very much." The falcon replied.
His gears creaked as he started to climb down the mountain. He had not been down the mountain in centuries. But determination kept him going, he had a purpose once more. To protect those who couldn't protect themselves. To protect this carried the bird. He carried it across frozen waves, over towering mountains, through blizzards, through ice and snow. He was tired, his joints creaked with every step. They got stiffer and stiffer. But he kept going.
And he finally made it there. To where the sun shone and the air was warm. He opened the door to his chest and out flew the Falcon.
"Thank you." The falcon said, "You have helped me. You have saved me."
"No." The robot replied, "Thank you. You have saved me. You have given me hope. You have given me one last final journey."
The robot lifted his arm to pet the falcon but he couldn't. His gears had rusted away. His strength had failed him.
"Thank you...for being my heart." The robot breathed.
He let his mechanical heart stop beating. He let his mind stop thinking. He was finally with his brothers again.
The falcon lived there still. In his chest. And every year, he is home to many singing birds.