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- Distribution and foraging behaviour of the Peruvian Booby (Sula variegata) off northern Chile 2010
- Seasonal variations in the behavioural thermoregulation of roosting Humboldt penguins (Spheniscus humboldti) in north-central Chile 2004
- The Humboldt penguinSpheniscus humboldti: a migratory bird? 1997
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