Depressed-This tone is depressed because it leaves you sad and lonely when Doodle is being held in the arms of the narrator. This leads to a great deal of guilt which is why he is facing away from the coffin.
Rare and exotic, in the clove of seasons, a gum tree ahead of us was shattered by a bolt of lightning.
Death- It is used very negatively with Doodle, and with the Scarlet Ibis bird that Doodle feels connected to.
Imagery here is used to depict the Old Woman Swamp that Doodle and the narrator used to go to before Doodle's death. Unfortunately, the narrator's selfish ways took over and caused him to leave Doodle behind. As the narrator runs toward the Old Woman Swamp, he finds that his brother is now dead.
The author's style in this story is a narrative because he uses a lot of adjectives to describe some important scenes and ideas. This helps him use imagery and his use of descriptive adjectives to get this main idea across.
The theme here is treat others how you would like to be treated. This can be seen here, where doodle is left in the rain by the narrator. This selfishness from the narrator ultimately leads to Doodle's inevitable doom.