Abstract The year 2012 marks 20 years of RSPB ownership of Ramsey Island, Pembrokeshire, while 2013 marks the 65th anniversary of the purchase of Grassholm. Ramsey is currently better known for its Red-billed Chough Pyrrhocorax pyrrhocorax population, which continues to thrive on this diverse island, but the eradication of Brown Rats Rattus norvegicus in 1999/2000 means that the island’s

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