Jahncke, J., & Paz-Soldán, L. (1998). Breeding biology of Peruvian guano-producing seabirds and its relationship with Peruvian anchovy availability. Boletin Instituto Del Mar Del Perú, 17(1-2), 55–66. Retrieved from https://revistas.imarpe.gob.pe/index.php/boletin/article/view/179