The important breeding areas of Wedge-rumped storm petrel were unkwnown until recently. This species breeding in the central cost of Peru: Ferrol, Chao and Corcovado islands. We reported Santa island as a breeding area of this seabird. We located a total of 407 active nests, including 92 (22%) with eggs and 7 (8%) with chicks. Most breeding birds were found in an area near to the guard house in the east of the island,in the south and southwest of the island, where guano birds and large numbers of ticks were registered, we found few storm petrel nests. The south and southwest of the island has a high humidity and several of the dry-stone walls were covered with moss and algae. In those walls no storm petrel nests were found. It is possible other breeding sites exist on the Peruvian coast. Surveys of nesting areas in coastal Peru will provide much-needed information on Wedge-rumped storm-petrel status.Keywords: Breeding biology, Humboldt Current, Peruvian island, Wedge-rumped storm-petrel. ResumenLas áreas reproductivas de la Golondrina de la tempestad Peruana eran desconocidas hasta hace poco. Esta especie anida en la costa central del Perú, en las islas: Ferrol, Chao y Corcovado. Reportamos un área reproductiva para esta ave marina en la isla Santa. Localizamos un total de 407 nidos activos, incluyendo 92 (22%) con huevos y 7 (8%) con polluelos. La mayor parte de las aves reproductivas se hallaron cerca de la casa al este de la isla, en el sur y suroeste, donde se registraron aves guaneras y altas cantidades de garrapatas pocas golondrinas fueron halladas. En el sur y suroeste de la isla la humedad contribuye a que algunas pircas estén cubiertas de musgos y algas, en estas paredes no se hallaron aves anidando. Es posible que existan otras áreas de reproducción en la costa peruana. Estudios de las áreas de anidación en la costa del Perú proveerá la información necesaria sobre el estatus de la Golondrina de la Tempestad Peruana.Palabras clave: Biología reproductiva, Corriente de Humboldt, Golondrina de la tempestad Peruana.
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