What is the narrator point of view in the novel, Boy, Snow, Bird?

The three parts of the novel, Boy, Snow, Bird, are narrated from two different points of view – the first and third parts from Boy’s, the second from Bird’s. All three parts are written in first person past tense narration, which means that in Parts 1 and 3, Boy is telling her story from her perspective, while in Part 2, Bird is telling her story in hers.