Many parrots occur only on islands and are vulnerable to introduced species such as rats and feral cat, as they lack the appropriate antipredator behaviours needed to deal with predators.
Moitos papagaios viven só en certas illas e son vulnerables ás especies introducidas como ratas e gatos que se fixeron silvestres, xa que carecen dos apropiados comportamentos antidepredadores necesarios para escaparen deles.