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Tracking the Peruvian Booby

Along Peru’s barren desert coastline, the seabirds reign. Protected on islands and peninsulas that are part of a national reserve network, guano birds like Guanay cormorants, Peruvian boobies and Peruvian pelicans can nest and rest undisturbed. These species of bird produce large quantities of guano, or poop, which is harvested commercially for use as fertilizer. Peru is the largest guano producer in the world, and for decades the harvests meant big business – until fishing for anchovy became more profitable. These highly sought-after fish also happen to be the birds’ primary food source, leading to competition between the commercial fishery and the guano birds. To better understand how the two overlap, a team of researchers led by Dr. Carlos Zavalaga from the Marine Ecosystem Research Unit at the Universidad Científica del Sur in Lima is studying where Peruvian boobies go when they are at sea.