Which sentence from the excerpt is foreshadowing and why?

Sentence 1 because it foreshadows that something tragic happened to the narrator in the distant past.
Sentence 2 because it foreshadows that the story is primarily about some type of bird.
Sentence 3 because it foreshadows that something significant happened in either the house or flower garden.
Sentence 4 because it foreshadows that Doodle is no longer present in the narrator’s life.