Rockhopper Penguin (Eudyptes chrysocome)Birds, SeabirdsThe rockhopper penguin is named for its ability to hop from rock to rock in order to scale a cliff to a safe breeding site. Once a pair has established a territory, the male and female will aggressively defend it from intruders, including other penguins and predators such as birds of prey and rats. VideoRisk Status Species at Risk (IUCN—Vulnerable)