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Abstract:

Very few bird species are able to complete a single long migratory flight. Instead, a far more common strategy is that birds rest and feed almost every day, accomplishing their journeys in a series of short flights. We evaluated if White-crested Elaenia (Elaenia albiceps chilensis) displays evidence of en route migratory disposition in the central Monte desert, Argentina. Recaptures and resights were lower for White-crested Elaenias than for Greater Wagtail-tyrants (Stigmatura budytoides; resident) and Southern Scrub-flycatchers (Sublegatus modestus; spring-summer visitor). The latter species showed site fidelity between years, but White-crested Elaenia did not. Percentage of individuals with cloacal protuberance was similar among the species, but individuals with brood patches were recorded only in Greater Wagtail-tyrants and Southern Scrub-flycatchers. White-crested Elaenias showed low, medium and high fat stores, while the other species presented no fat or low fat stores. White-crested Elaenia had a high level of fruit consumption, while the other species consumed fruits occasionally or not at all. Our results support the hypothesis that the White-crested Elaenia uses the Monte desert as a stop-over area during its spring flight, and yield novel insights to fill a gap in our knowledge about the annual cycle of migrant birds in the Neotropics. © BirdLife Australia 2016.

Registro:

Documento: Artículo
Título:Do migrating White-crested Elaenia, Elaenia albiceps chilensis, use stop-over sites en route to their breeding areas? Evidence from the central Monte desert, Argentina
Autor:Cueto, V.R.; Sagario, M.C.; Lopez De Casenave, J.
Filiación:Desert Community Ecology Research Team (ECODES), Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and IEGEBA (UBA-CONICET), Pabellón 2, Buenos Aires, Argentina
Centro de Investigación Esquel de Montaña y Estepa Patagónica (CIEMEP), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Naturales, Universidad Nacional de la Patagonia SJB, Sarmiento 849, Esquel, Chubut, Argentina
Palabras clave:annual cycle; breeding site; desert; flight behavior; fruit; hypothesis testing; migratory species; Neotropical Region; passerine; site fidelity; stopover; Argentina; Mendoza; Monte Desert; Aves; Elaenia; Elaenia albiceps; Stigmatura budytoides; Sublegatus modestus
Año:2016
Volumen:116
Número:3
Página de inicio:301
Página de fin:304
DOI: http://dx.doi.org/10.1071/MU15078
Título revista:Emu
Título revista abreviado:Emu
ISSN:01584197
CODEN:EMUMA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01584197_v116_n3_p301_Cueto

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Citas:

---------- APA ----------
Cueto, V.R., Sagario, M.C. & Lopez De Casenave, J. (2016) . Do migrating White-crested Elaenia, Elaenia albiceps chilensis, use stop-over sites en route to their breeding areas? Evidence from the central Monte desert, Argentina. Emu, 116(3), 301-304.
http://dx.doi.org/10.1071/MU15078
---------- CHICAGO ----------
Cueto, V.R., Sagario, M.C., Lopez De Casenave, J. "Do migrating White-crested Elaenia, Elaenia albiceps chilensis, use stop-over sites en route to their breeding areas? Evidence from the central Monte desert, Argentina" . Emu 116, no. 3 (2016) : 301-304.
http://dx.doi.org/10.1071/MU15078
---------- MLA ----------
Cueto, V.R., Sagario, M.C., Lopez De Casenave, J. "Do migrating White-crested Elaenia, Elaenia albiceps chilensis, use stop-over sites en route to their breeding areas? Evidence from the central Monte desert, Argentina" . Emu, vol. 116, no. 3, 2016, pp. 301-304.
http://dx.doi.org/10.1071/MU15078
---------- VANCOUVER ----------
Cueto, V.R., Sagario, M.C., Lopez De Casenave, J. Do migrating White-crested Elaenia, Elaenia albiceps chilensis, use stop-over sites en route to their breeding areas? Evidence from the central Monte desert, Argentina. Emu. 2016;116(3):301-304.
http://dx.doi.org/10.1071/MU15078