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♦ ¹VARIATION IN MAGELLANIC PENGUIN SPHENISCUS MAGELLANICUS DIET IN THE FALKLAND ISLANDS, K.R. THOMPSON, Marine Ornithology 21: 57-67 (1993)
♦ ²"Food and Feeding Biology of the South American Tern during the Nonbreeding Season", Marco Favero, M. Susana Bó , M. Patricia Silva R. and Carlos García-Mata, Waterbirds: The International Journal of Waterbird Biology Vol. 23, No. 1 (2000), pp. 125-129