Foraging by Humboldt penguins (Spheniscus humboldti) during the chick-rearing period: general patterns, sex differences, and recommendations to reduce incidental catches in fishing nets
Taylor, S. S., Leonard, M. L., Boness, Daryl J., and Majluf, P. 2002. "Foraging by Humboldt penguins (Spheniscus humboldti) during the chick-rearing period: general patterns, sex differences, and recommendations to reduce incidental catches in fishing nets." Canadian Journal of Zoology, 80, (4) 700–707.