In the story Draco decides to live in the forest as a bird, a crow I think. Harry finds him there.

Harry is the master of death and lives alone. He can feel when people die so he stays away from heavily populated areas. Also people either are, or Harry believes they are afraid of him. Draco can see like a dark aura around Harry (I think) he isn't afraid and stays with him.

Near the end Draco is killed after being attacked by another bird when he was out flying. Harry brings him back to life.

I tried finding it but I wasn't able to. Thank you for your help.

We believe you are looking for The Last of What the World Left You by @xanthippe74 (25k, T)