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- Distribution and Trends in Kelp Gull (Larus dominicanus) Coastal Breeding Populations in South America 2016
- Unusual coastal breeding in the desert-nesting Gray Gull (Leucophaeus modestus) in northern Chile 2016
- Seasonal and regional variation in the diet of the Kelp Gull in northern Chile 2005
- Humboldt Penguin census on Isla Chañaral, Chile: Recent increase or past underestimate of Penguin numbers? 2004