Rockhopper penguin on the islands of Gough and Tristan de Cunha in the Atlantic Ocean and St. Paul and Manchester in the Indian Ocean. The southern rockhopper breeds on the Falkland Islands, Argentina and Chile, with breeding colonies around Cape Horn in South America, and Prince Edward, Marion, Crozet, Kerguelen, Heard, Macquarie, Campbell, Auckland and Antipodes Islands in the southern Indian Ocean. Eastern rockhopper penguins are mostly found breeding on Campbell Island in New Zealand, but their numbers have declined immensely. . Rockhopper penguins usually make their habitat in rocky shorelines. They make nests and burrows in tall grasses called tussocks. The
What Bird is That? according to their usual habitat. The accompanying text included brief notes on distribution, breeding and behaviour. While initial sales were poor, history tells us that Cayley had accurately discerned a market need and successfully responded to it. During WWII sales accelerated and Cayley’s first collection, reprinted time and time again, eventually became a household name among birdwatchers and the book was recognised as an Australian classic. The original sponsorship of "What Bird is That?" proved a great investment for the Gould League, who benefited from the sale of its numerous reprints and revised editions. By 1960, it was rated the