Cats Vanish, Seabirds Return to Ascension Island

Ascension Island has witnessed a remarkable ecological recovery following the successful eradication of feral cats, a predator introduced in 1815. This invasive species had devastated native seabird populations, driving most species away from the island's mainland.

The ambitious campaign to remove feral cats began in February 2002 and concluded with the last cat's elimination on January 31, 2004. This multi-phase operation involved poisoned bait, live trapping, and extensive community outreach to ensure the safety of the island's human inhabitants and domestic pets.

In the years following the eradication, significant signs of recovery emerged. By 2026-08-17T12:25:49+00:00, five seabird species had recolonized parts of the mainland, areas they had been unable to use for generations. This return signifies the reopening of vital habitats.

While the absence of cats has allowed seabirds to return, their recovery is gradual. Researchers note that factors such as food availability and the presence of black rats, which prey on eggs and chicks, may affect breeding success. Further studies are ongoing.

The Ascension Island project serves as a powerful demonstration of how removing an invasive predator can enable wildlife to reclaim lost territory. It also highlights the complex requirements of conservation on inhabited islands, emphasizing communication and the protection of domestic animals.