In the quoted material provided, the first person perspective is indeed represented through the use of "I" pronouns and the personal recounting of the man's experiences. Here's a breakdown to support this:
1. **Use of "I" pronouns:** The repeated use of "I" pronouns, such as "I turned loose of my load," "I was like him," and "I was on top of the world myself," indicates that the narrator is speaking from their own point of view.
2. **Personal storytelling:** The man in the text is narrating his own thoughts and experiences, describing how he and the mockingbird were similar in their behavior, suggesting a personal connection to the events being described.
3. **Emotional insight:** The narrator's feelings and thoughts are shared directly through the "I" pronouns, offering an intimate view of his emotions and perceptions, which is characteristic of a first person perspective.
Therefore, based on the presence of "I" pronouns and the direct storytelling of personal experiences, it can be concluded that the quoted material represents a first person perspective.