 <unk> predators , in contrast to birds , rely on their sense of smell and hearing to find prey and often hunt by night . The kakapo 's adaptations to avoid avian predation have thus been useless against its new enemies – this is one of the reasons for its massive decline since the introduction of dogs , cats and <unk> – see Conservation : Human impact . A typical way for humans to hunt down the kakapo is by releasing trained dogs . 
