New Zealander’s have drawn a line in the sand, announcing that Aotearoa will rid the nation of rats, stoats and possums by 2050. We’ve been successful on off-shore islands, but what will it take to extend this across the mainland? We look at the strategy behind Predator Free 2050 and travel to a 12,000 hectare field research site in the Perth Valley, South Westland where Zero Invasive Predators (ZIP) are trialling techniques they hope may one day roll out right across the country. We also meet a dedicated community group protecting a pair of nesting Kea and discover the knife-edge our native birds must navigate every breeding season.

Watch episode two, Defiance here