Seabird populations on Lundy Island have rebounded sharply over the past two decades, with numbers surging to over 40,000 following a concerted conservation effort to eradicate invasive rats, according to recent figures reported by the BBC.
Two Decades of Recovery After Rat Eradication
The dramatic ecological turnaround follows a 2002 partnership formed between the RSPB, Natural England, the National Trust, and the Landmark Trust. Organizers targeted brown rats that had been inadvertently introduced to the island via ships and shipwrecks, identifying the rodents as the primary threat to burrow-nesting species such as Manx shearwaters and puffins.
Prior to the intervention, Lundy’s seabird population had plummeted from an estimated 80,000 birds in 1939 down to a stark low of 7,351 during a 2000 survey. Four years after the multi-agency project began, the island was officially declared rat-free following a comprehensive count conducted by the project team.
Helen Booker, RSPB senior conservation officer, noted the scale of the achievement. According to Booker, if restoring more than 40,000 seabirds on a single island was achievable, “just imagine what could be done for nature across the UK if we scaled up this ambition.”
Ongoing Biosecurity and Island Protection
Maintaining the island’s rat-free status has required strict, continuous biosecurity measures and long-term monitoring protocols managed across the territory. Cargo inspections aboard boats are used to prevent new rodents from being brought ashore, while monitoring stations featuring chocolate wax blocks are regularly checked for bite marks.
Authorities also rely on public vigilance, urging visitors to report any signs of rats either on the island or aboard their vessels. An Island Response Team remains on standby to control any potential new rat incursions should a sighting ever occur.
Booker added that these results reinforce the need for Lundy to be designated as a Special Protection Area to protect seabirds at sea as well as on land.
