Kākāriki were the first bird to be introduced to Tiritiri Matangi. In January 1974, 10 years before planting started, kākāriki from Cuvier island were released on the island. Their success prompted scientists to investigate the island as a place to do research . These long-time residents still have a thriving population, despite many new arrivals. Kākāriki are particularly chatty, and their rapid, loud chatter can often be heard overhead as they often vocalise whilst flying.