First Documented Migration of Individual White-Crested Elaenias (Elaenia albiceps chilensis) in South America

Autor(es)

Jimenez, Jaime E. ; Jahn, Alex E. ; Rozzi, Ricardo ; Seavy, Nathaniel E.

• Tipo de documento: Artigo Científico
• Fonte: Wilson Journal of Ornithology; v. 128, n. 2, p. 419-425, JUN 2016.
• Citações Web of Science: 6

Resumo

Few details are available on the migration (rates, routes, dates) of Neotropical austral migrant birds, which breed and migrate wholly within South America. Only one long-distance austral migrant breeds in the South American temperate forest biome: the White-crested Elaenia (Elaenia albiceps chilensis). However, the migratory dates, routes, and wintering locations are poorly known. During the austral summers of 2011-2013, we attached light level geolocators to breeding White-crested Elaenias at the world's southernmost forests, on Navarino Island, Chile. The duration of fall migration of three Elaenias to the Amazonian wintering grounds was 64-96 days, while spring migration was 45-60 days. The average distance between breeding and wintering grounds was 5,932 km, which constitutes the longest migration of a Neotropical austral migrant studied to date. A better understanding of the annual cycle of Elaenias could offer new opportunities to examine the evolution of migration and population regulation of one of Patagonia's most common birds. (AU)

• Processo FAPESP: 12/17225-2 - A evolução da migração das aves: a teoria atual se aplica na América do Sul?
• Beneficiário: Alejandro Edward Jahn
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores