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Masafuera Rayadito

Saving the Critically Endangered Birds of Alejandro Selkirk Island

Oikonos biologists partner with key collaborators to conserve biodiversity and protect critically endangered species in the Juan Fernández Archipelago 700 km off central Chile. One of the endemic species that lives no where else on Earth is the Másafuera Rayadito (Aphrastura masafuerae). This special bird is categorized as Critically Endangered by the IUCN.

The program’s mission is to improve nesting conditions for this endemic rayadito through predator control, national and international conservation planning, and community stewardship.

  • Conserve a critically endangered forest bird endemic to one island, Isla Alejandro Selkirk, to prevent its extinction and the overall loss of biodiversity.
  • Continue to improve the conservation solutions, resources and capactity.
  • Develop a predator-proof nesting box that excludes three species of invasive mammals.

This program has improved:

(1) our understanding of rayadito breeding biology, information critical for conservation planning,

(2) the effectiveness of the nest box design in excluding predators, and

(3) community awareness of the species, threats and conservation opportunities.



Partners and Funders

  • Corporación Nacional Forestal (CONAF)
  • Island Conservation
  • Comité de Adelanto de la Isla Alejandro Selkirk (Alejandro Selkirk Advancement Committee)
  • Anexo Colegio Insular en Alejandro Selkirk (Annex School of ~ 20 students in the summer)
  • Proyecto GEF
  • American Bird Conservancy
  • Dr. Matthew McKown (Conservation Metrics)
  • Dr. Rodrigo Vásquez (Instituto de Ecología y Biodiversidad)
  • Club 300 Bird Protection
  • Alliance for Zero Extinction
  • BirdLife International
  • Neotropical Bird Club

      Equipo en terreno en el sector de Tres Torres durante el verano de 2015, isla Alejandro Selkirk.


Hector Gutierrez, Project Leader

Published Resources

Gonzalez, J. 2014. Phylogenetic position of the most endangered Chilean bird: the Masafuera Rayadito (Aphrastura masafuerae; Furnariidae). Tropical Conservation Science 7(4): 677-689.

Pitt, W. L., L. C. Driscoll, and E. A. VanderWerf (2011). A rat-resistant artificial nest box for cavity-nesting
birds. Human–Wildlife Interactions 5:100–105.

Hahn, I. J.; Vergara, P. M.; Römer, U. 2011. Importance of nest attributes in the conservation of endemic birds of the Juan Fernández Archipelago, Chile. Bird Conservation International 20: 2797-2813.

Tomasevic, J.A, C.F Estades, and P.J Hodum (2010). “On the Ecology and Conservation of the Critically
Endangered Masafuera Rayadito (Aphrastura masafuerae).” Ornitologia Neotropical. 21.4 : 535-543.

Hahn, I.; Römer, U.; Vergara, P M.. 2010. Conserving Chile’s most critically endangered bird species: First data on foraging, feeding, and food items of the Másafuera Rayadito (Aves: Furnariidae). Vertebrate Zoology 60(3): 233-242.

Hahn, I.; Römer, U. 2002. Threatened avifauna of the Juan Fernández archipelago, Chile: the impact of introduced mammals and conservation priorities. Cotinga 17: 66-72.

Hahn, I.; Römer, U; Schlatter, R. 2004. Nest sites and breeding ecology of the Másafuera Rayadito (Aphrastura masafuerae) on Alejandro Selkirk Island, Chile. Journal of Ornithology 145: 93-97.