Off the coast of Chile, a Peruvian diving petrel — a rare seabird known to locals as a “yunco” — has been spotted for the first time in decades, Earth.com reported.

Island Conservation, a nonprofit organization that focuses on restoring island ecosystems and preventing the extinction of vulnerable species, has been leading efforts for several years to make Pajaros Uno Island more hospitable to native species. With the return of the Peruvian diving petrel, it appears their efforts have paid off.

Pajaros Uno Island has been plagued by an invasive rat species that was accidentally introduced by fishermen. The rats have laid waste to native plant species, eating up their seedlings, and native seabird species, eating their eggs.

To address the problem, the Chilean Ministry of the Environment and Island Conservation began working with local communities and Island Conservation in 2020 to manage the rodent populations.