Kirsten Stöven, Frank Jacobs, Ewald Schnug: Guano – ein historisches Düngemittel In: Journal für Kulturpflanzen. Band 68, 2016, ISSN 1867-0911, S. 199, DOI:10.5073/JFK.2016.07.02 (PDF-Datei).
C. B. Zavalaga, R. Paredes: Foraging behaviour and diet of the Guanay Cormorant. In: South African Journal of Marine Science. Band21, Nr.1, 1999, S.251–258, doi:10.2989/025776199784125980.
David Cameron Duffy: Environmental uncertainty and commercial fishing: effects on Peruvian guano birds. In: Biological Conservation. Band26, Nr.3, 1983, S.227–238, doi:10.1016/0006-3207(83)90075-7.
Megan K. Watson, Jennifer N. Langan, Matthew C. Allender, Marco Cardeña, Susana Cárdenas-Alayza, Michael J. Adkesson: Health assessment of guanay cormorant (Phalacrocorax bougainvillii) and Peruvian pelican (Pelecanus thagus) populations at Punta San Juan, Peru. In: Journal of Zoo and Wildlife Medicine. Band52, Nr.3, 2021, S.975–985, doi:10.1638/2019-0119.1.
Pedro Rodrigues, Joana Micael: The importance of guano birds to the Inca Empire and the first conservation measures implemented by humans. In: Ibis. Band163, Nr.1, 2021, S.283–291, doi:10.1111/ibi.12867.
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J. Orta, F. Jutglar, E. F. J. Garcia, P. Boesman: Guanay Cormorant (Phalacrocorax bougainvilliorum). In: J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, E. de Juana, E. (eds.): Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona 2018 (online).
Kirsten Stöven, Frank Jacobs, Ewald Schnug: Guano – ein historisches Düngemittel In: Journal für Kulturpflanzen. Band 68, 2016, ISSN 1867-0911, S. 199, DOI:10.5073/JFK.2016.07.02 (PDF-Datei).