The Islas Ballestas off the coast of the Chincha and Pisco valleys, home to the primary guano-producing bird species of the region: Peruvian booby (Sula variegata), Peruvian pelican (Pelecanus thagus), and Guanay cormorant (Leucocarbo bougainvilliorum).

The Logic of Abundance

History & Prehistory /

Dr. Jacob Bongers, University of Sydney. Photo: Stefanie Zingsheim / University of Sydney. How a coastal civilization before the Inca transformed seabirds, soil, and maize into a system of enduring power Editor’s Note The best conversations often begin mid thought. Dr. Jacob Bongers, digital archaeologist at the University of Sydney and Visiting Research Fellow at

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