Rats and pigs gone, birds nesting again: Samoa's Nu'utele Island rebounds within months

Within one month of the last invasive rat and feral pig being removed from Nu'utele Island in Samoa, researchers found active bird nests containing eggs in locations that had previously been death traps — too exposed to survive the island's rodent population. A year on, knee-high native seedlings carpet the forest floor, sea turtles are nesting again after decades of absence, a land crab species never before recorded on the island has appeared, and local families are harvesting giant taro from plots where crops had repeatedly failed.

The results, announced October 20, 2026, stem from a collaboration among Samoa's Ministry of Natural Resources and Environment (MNRE), the Pacific Regional Invasive Species Management Support Service (PRISMSS), the Secretariat of the Pacific Regional Environment Programme (SPREP), conservation nonprofit Island Conservation, local landowners, and community members from the nearby village of Aleipata. Twelve expeditions covering more than 130 days on Nu'utele's rugged terrain were carried out by field teams between March 2025 and May 2026, with crews baiting, trapping, and hunting to remove rats and feral pigs — an approach widely used across Polynesia.

In many areas, native seedlings are carpeting the forest floor. On recent visits, I saw knee-high seedlings growing where forest regeneration had previously been suppressed. People are now able to grow and harvest giant taro plants where crops would have failed previously. These changes point to the recovery of natural processes.— Paul Jacques, Project Manager, Island Conservation

Nu'utele is a Key Biodiversity Area and a government conservation priority for Samoa. It sits within a marine protected area, and Island Conservation describes it as home to Samoa's best-preserved tropical forest — ground that has never been cleared and remains free of the invasive plants that have taken hold on the Samoan mainland. Yet, like much of the Pacific, it had been quietly unraveling. Feral pigs root up soil and prevent native vegetation from establishing; rats, which arrived with human settlement across the Pacific, raid the eggs and chicks of birds that evolved on predator-free islands and have no natural defenses against them.

The bird response has been among the most striking early signals. The shy ground dove, a species in decline across the Southwest Pacific, has its largest remaining population in Samoa on Nu'utele. A nest of the endemic Samoan starling was also recorded by researchers, who additionally observed breeding activity among the endemic Samoan flycatcher and whistler. Former New Zealand national rugby player and conservation advocate Glen Osborne joined the expert hunting teams during the final phase of pig removal, according to Good News Network.

Recovery is not confined to the forest interior. Land crabs — which cycle nutrients between forests, reefs, and the open ocean — are expected to increase as predator pressure lifts, and one species not previously recorded on Nu'utele has already been found. Sea turtles, absent as nesters for decades, have returned to the island's shores, according to Island Conservation.

Climate resilience starts with healthy ecosystems. When forests can regenerate naturally, they stabilize soils, retain water, support wildlife, and help communities withstand climate impacts. What we're seeing on Nu'utele demonstrates how restoring nature can provide long-term benefits for both people and biodiversity.— Paul Jacques, Project Manager, Island Conservation

That framing — restoration as climate adaptation — is central to how partners are presenting Nu'utele's results. Native forests and agroforestry systems anchor soils, reduce erosion, and improve watershed function, making islands more resistant to the stronger storms and shifting rainfall that climate projections forecast for the Pacific. Published in the journal Science Advances the same week, a study led by Nicholas Graham of Lancaster University looked at the role seabirds and native vegetation play in driving ecosystem processes that support atoll island resilience, adding to the growing body of evidence behind the approach.

Nu'utele shows what's possible when communities, governments, and conservation partners work together towards a shared vision. We're seeing forests regenerate, native wildlife return, food systems improve, and vital habitat expand for species that depend on healthy ecosystems. The lessons learned from this island can help guide restoration efforts across the Pacific and beyond.— David Moverley, Invasive Species Adviser, SPREP

The next planned milestone is the translocation of the Mao, a native Samoan forest bird listed as threatened and vulnerable to habitat loss, invasive species, and extreme storms. Germany's International Climate Initiative (IKI) supported the baseline data collection needed for the introduction, with the establishment of a new Mao population on Nu'utele set as a target within Island Conservation's 2026–2032 Restoring Pacific Islands for Nature and People Project. Long-term monitoring of forest regeneration, biodiversity, and ecosystem health will continue, with the data intended to guide future restoration work across the region.

Why it matters — Nu'utele's rapid rebound offers a replicable, evidence-backed model for using invasive species removal as a tool for ecological recovery, food security, and climate resilience across the Pacific and other island regions.

Reported by goodnewsnetwork.org, islandconservation.org, impactful.ninja