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The Humboldt penguin in Peru

Numbers of Humboldt penguins Spheniscus humboldti, which live on the coast and islands of Chile and Peru, have been declining since the mid-1800s. Extracting guano for fertiliser has damaged their breeding sites; they have been exploited for food and skins and captured for pets or zoos; they are incidentally caught in fishing nets and recent over-fishing may have caused a food shortage. The author surveyed the Humboldt penguins in Peru in 1981 and here discusses the conservation measures that are being taken.