In 2002, Lundy began its rat-eradication project; puffins later rose from 13 in 2000 to 1,335, and more than 40,000 seabirds now nest on the island
Off the coast of southwest England, the small island of Lundy was once a textbook case of how invasive rats can devastate seabird colonies. By the late 1990s, puffin numbers…