New Zealand removes rats from island, sparking dramatic saddleback recovery

In 1996, New Zealand's Department of Conservation successfully wiped out invasive rats from Kapiti Island, a 2,000-hectare reserve off Wellington's coast. This bold conservation effort altered the island's natural environment dramatically. Native wildlife responded rapidly, with the native saddleback population more than doubling over three years.

Their annual growth rate surged from 1.3% to an astonishing 33.2%. Eradicating non-native predators turned out to be the most effective way to protect vulnerable island species. Today, Kapiti Island is a world-renowned example of successful ecological recovery, showcasing the power of practical field science and targeted conservation work.