Una colonia reproductiva de la Golondrina de la Tempestad Peruana, Oceanodroma tethys kelsalli (Lowe 1925), en la Isla Santa, Perú

Abstract

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.

A new breeding colony of the Wedge-rumped Storm-Petrel (Hydrobates tethys kelsalli, Lowe 1925) on Foca Island, extreme Northwestern Peru

“…With a caliper, we measured the length of wing, culmen, and tarsus of five adults of unknown sex. The mean of these metrics was compared with the means reported by Murphy (1936), Ayala et al (2004) and Ayala et al (2008) using the 95% confidence interval through its standard deviations with program R (R Core Team 2017).…”

“…Simeone et al (2003) found this species nesting on Grande Island in northern Chile, considerably expanding the southern limit of its known breeding range. In Peru, four nesting areas have been reported for this species: in Chao and Corcovado islands off the coast of La Libertad (Ayala et al 2004), on Ferrol Island (Ayala & Sánchez-Scaglioni 2007), and Santa Island (Ayala et al 2008), near Chimbote, Ancash, central Peru.…”

Distribución espacio-temporal de la golondrina de mar de Markham Oceanodroma markhami (Salvin, 1883) y la golondrina de mar acollarada O. hornbyi (Gray, 1854) en Perú. 2019

“…Oceanites gracilis Elliot's storm petrel (Ayala et al, 2008); Oceanodroma tethys Wedge-rumped storm petrel (García-Olaechea et al, 2020), and O. markhami Markham's storm petrel (Jahncke, 1993;García-Godos et al, 2012). Finally, there is evidence that O. hornbyi Hornby's storm petrel has colonies in our territory since there are signs of reproduction, but these sites remain unknown.…”

“…Meanwhile, their at-sea distribution is little known and at the same time is of great importance since it is the marine environment where this species will spend most of its life. país son Oceanites gracilis golondrina de mar chica (Ayala et al, 2008); Oceanodroma tethys golondrina de mar peruana (García-Olaechea et al, 2020) y O. markhami golondrina de mar de Markham (Jahncke, 1993;García-Godos et al, 2012), finalmente, se presume que O. hornbyi golondrina de mar acollarada tiene colonias en nuestro territorio ya que existen indicios de su reproducción, pero aún se desconocen esos sitios.…”