Nesting success and productivity of the Rufous-collared Sparrow (Zonotrichia capensis) in a woodland of Buenos Aires province (Argentina)

The Rufous-collared Sparrow (Zonotrichia capensis) is one of the most widely distributed Neotropical passerine. In this paper we analyzed the nesting success of a Rufous-collared Sparrow population nesting at a woodland area in the central-eastern Argentina (Buenos Aires province). We also assessed...

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Autor principal: Fernandez, Gustavo Javier
Publicado: 2007
Materias:
Brood parasitism
Depredation
Nesting success
Productivity
Zonotrichia capensis
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10754377_v18_n4_p481_Fernandez
http://hdl.handle.net/20.500.12110/paper_10754377_v18_n4_p481_Fernandez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_10754377_v18_n4_p481_Fernandez
record_format dspace
spelling paper:paper_10754377_v18_n4_p481_Fernandez2023-06-08T16:05:13Z Nesting success and productivity of the Rufous-collared Sparrow (Zonotrichia capensis) in a woodland of Buenos Aires province (Argentina) Fernandez, Gustavo Javier Brood parasitism Depredation Nesting success Productivity Zonotrichia capensis The Rufous-collared Sparrow (Zonotrichia capensis) is one of the most widely distributed Neotropical passerine. In this paper we analyzed the nesting success of a Rufous-collared Sparrow population nesting at a woodland area in the central-eastern Argentina (Buenos Aires province). We also assessed the effect of brood parasitism by Shiny Cowbirds (Molothrus bonariensis) and nest depredation on its nest productivity. During the 2005-2006 breeding seasons (September-January), we found 41 Rufous-collared Sparrow nests. About 53 % of nests were parasitized by cowbirds, and 19.35 % produced fledglings. Nest survival probability was similar for egg-laying-incubation and nestling rearing stages. The main cost of cowbird parasitism was the loss of Rufous-collared Sparrow eggs during the laying-incubation stage, while we were unable to detect any effect of the presence of cowbird nestlings at the nestling rearing stage. Productivity analysis revealed that the main factor related to the breeding success of the Rufous-collared Sparrow was the nest depredation, while brood parasitism remained a secondary factor. Only in conditions of higher nest survival of Rufous-collared Sparrows would brood parasitism have a major effect over the host breeding success. © The Neotropical Ornithological Society. Fil:Fernández, G.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2007 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10754377_v18_n4_p481_Fernandez http://hdl.handle.net/20.500.12110/paper_10754377_v18_n4_p481_Fernandez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Brood parasitism
Depredation
Nesting success
Productivity
Zonotrichia capensis
spellingShingle Brood parasitism
Depredation
Nesting success
Productivity
Zonotrichia capensis
Fernandez, Gustavo Javier
Nesting success and productivity of the Rufous-collared Sparrow (Zonotrichia capensis) in a woodland of Buenos Aires province (Argentina)
topic_facet Brood parasitism
Depredation
Nesting success
Productivity
Zonotrichia capensis
description The Rufous-collared Sparrow (Zonotrichia capensis) is one of the most widely distributed Neotropical passerine. In this paper we analyzed the nesting success of a Rufous-collared Sparrow population nesting at a woodland area in the central-eastern Argentina (Buenos Aires province). We also assessed the effect of brood parasitism by Shiny Cowbirds (Molothrus bonariensis) and nest depredation on its nest productivity. During the 2005-2006 breeding seasons (September-January), we found 41 Rufous-collared Sparrow nests. About 53 % of nests were parasitized by cowbirds, and 19.35 % produced fledglings. Nest survival probability was similar for egg-laying-incubation and nestling rearing stages. The main cost of cowbird parasitism was the loss of Rufous-collared Sparrow eggs during the laying-incubation stage, while we were unable to detect any effect of the presence of cowbird nestlings at the nestling rearing stage. Productivity analysis revealed that the main factor related to the breeding success of the Rufous-collared Sparrow was the nest depredation, while brood parasitism remained a secondary factor. Only in conditions of higher nest survival of Rufous-collared Sparrows would brood parasitism have a major effect over the host breeding success. © The Neotropical Ornithological Society.
author Fernandez, Gustavo Javier
author_facet Fernandez, Gustavo Javier
author_sort Fernandez, Gustavo Javier
title Nesting success and productivity of the Rufous-collared Sparrow (Zonotrichia capensis) in a woodland of Buenos Aires province (Argentina)
title_short Nesting success and productivity of the Rufous-collared Sparrow (Zonotrichia capensis) in a woodland of Buenos Aires province (Argentina)
title_full Nesting success and productivity of the Rufous-collared Sparrow (Zonotrichia capensis) in a woodland of Buenos Aires province (Argentina)
title_fullStr Nesting success and productivity of the Rufous-collared Sparrow (Zonotrichia capensis) in a woodland of Buenos Aires province (Argentina)
title_full_unstemmed Nesting success and productivity of the Rufous-collared Sparrow (Zonotrichia capensis) in a woodland of Buenos Aires province (Argentina)
title_sort nesting success and productivity of the rufous-collared sparrow (zonotrichia capensis) in a woodland of buenos aires province (argentina)
publishDate 2007
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10754377_v18_n4_p481_Fernandez
http://hdl.handle.net/20.500.12110/paper_10754377_v18_n4_p481_Fernandez
work_keys_str_mv AT fernandezgustavojavier nestingsuccessandproductivityoftherufouscollaredsparrowzonotrichiacapensisinawoodlandofbuenosairesprovinceargentina
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