Mana Island seabird restoration efforts show significant success after decades of work. Translocated chicks returned as adults, establishing new breeding populations on the island. Fluttering shearwaters are now breeding in natural burrows, indicating project advancement. Common diving petrels and fairy prions also have established colonies there. This long-term project demonstrates a positive ecological recovery for native species.Mana Island seabird restoration efforts show significant success after decades of work. Translocated chicks returned as adults, establishing new breeding populations on the island. Fluttering shearwaters are now breeding in natural burrows, indicating project advancement. Common diving petrels and fairy prions also have established colonies there. This long-term project demonstrates a positive ecological recovery for native species.