Fiordland penguins Milford, front, and Chalky run past a keeper while out for a stroll out of his enclosure at Sydney's Taronga Zoo Monday, March 17, 2008. Chalky and Milford along with another male, Mr. Munro, are the only Fiordland penguins in captivity and are listed as an vulnerable species found only in New Zealand's south. [Agencies]