Sibley- The Robot and the Bluebird

This a story of a rusty old robot with a broken heart .Other robots try to fix him, but have no luck. He feels old and alone as he lays on the heap of old parts. Night and day,autumn and winter come and go.
  A bluebird is trying to fly south, and finds the robot. Robot shares a space where his heart was  and they become friends. He carries  bluebird across  mountains , blizzards, and fog until he can go no further. In the end, Robot becomes a home for all singing birds.  ~Mary Jo