Mortality of macaroni penguins (Eudyptes chrysolophus) at Marion Island caused by avian cholera (Pasteurella multocida)
in 2004/05

At Marion Island, an outbreak of Avian Cholera Pasteurella multocida killed about 2 000 Macaroni Penguins Eudyptes chrysolophus at the colony at Kildalkey Bay during November 2004. Other colonies of Macaroni Penguins and other species of seabirds were not affected. In March 1993, an unknown disease killed several thousand Macaroni Penguins at Bullard Beach, but also did not affect other colonies or other species of seabird.