Seabirds shaped the expansion of pre-Inca society in Peru
Fig 2
The primary guano-producing bird species.
(A) Sula variegata (Peruvian booby). (B) Pelecanus thagus (Peruvian pelican). (C) Leucocarbo bougainvilliorum (Guanay cormorant). Photos by Diego H. (A and C) and Claude Kolwelter (B), iNaturalist.org. Licensed under CC-BY 4.0. Cropped from originals.