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♦ ¹DIET AND FEEDING OF DOLPHIN (CORYPHAENA HIPPURUS) IN WESTERN MEDITERRANEAN WATERS, Enric Massutí, Salud Deudero, Pilar Sánchez and Beatriz Morales-Nin, BULLETIN OF MARINE SCIENCE, 63(2): 329–341, 1998
♦ ²Annual variation in diets, feeding locations and foraging behaviour of gannets in the North Sea: flexibility, consistency and constraint, K. C. Hamer, E. M. Humphreys, S. Garthe, J. Hennicke, G. Peters, D. Grémillet, R. A. Phillips, M. P. Harris, S. Wanless, Mar Ecol Prog Ser 338: 295–305, 2007