Sexual differences in risk-taking behaviour of the Southern house wren during the nestling rearing stage

When faced with a predator near the nest, breeding birds faced a dilemma: to continue providing parental care to their offspring exposing themselves to risk or to desert the nest for a brief period of time, exposing their offspring to harm due to the suspension of parental brooding and feeding. In t...

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Autores principales:	Fernandez, Gustavo Javier, Corral, Maria Gabriela, Llambías, Paulo
Publicado:	2013
Materias:	Brood value Harm-to-offspring Life-history traits Predation risk Troglodytes
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08739749_v18_n1_p11_Fernandez http://hdl.handle.net/20.500.12110/paper_08739749_v18_n1_p11_Fernandez
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_08739749_v18_n1_p11_Fernandez
record_format	dspace
spelling	paper:paper_08739749_v18_n1_p11_Fernandez2023-06-08T15:46:22Z Sexual differences in risk-taking behaviour of the Southern house wren during the nestling rearing stage Fernandez, Gustavo Javier Corral, Maria Gabriela Llambías, Paulo Brood value Harm-to-offspring Life-history traits Predation risk Troglodytes When faced with a predator near the nest, breeding birds faced a dilemma: to continue providing parental care to their offspring exposing themselves to risk or to desert the nest for a brief period of time, exposing their offspring to harm due to the suspension of parental brooding and feeding. In this study, we analysed the response of nesting Southern house wrens (Troglodytes aedon musculus) to a predator model placed near the nest. The experiment was performed in 56 nests when nestling were 3–4 or 10–12 days old. The model (a plastic decoy of the Great Horned Owl Bubo virginianus) was placed at 3 m from the nest. Parent risk-taking was measured as the time elapsed for males and females to resume parental activities during the exposition to the model. We found that males and females delayed parental visits when exposed to the predator model, but females resumed them faster than males, irrespectively of the nesting stage. We also found that males refused to enter to the nest more frequently than females when exposed to the predator model. No effect of breeding experience or nesting stages was noted in the risk taking behaviour of adults. We suggest that sexual differences detected in this species reflect the higher ability of females to cope with the nestling needs and its lower lifetime expectancy. © 2013, Springer-Verlag Berlin Heidelberg and ISPA. Fil:Fernández, G.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Corral, M.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Llambías, P.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08739749_v18_n1_p11_Fernandez http://hdl.handle.net/20.500.12110/paper_08739749_v18_n1_p11_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 value Harm-to-offspring Life-history traits Predation risk Troglodytes
spellingShingle	Brood value Harm-to-offspring Life-history traits Predation risk Troglodytes Fernandez, Gustavo Javier Corral, Maria Gabriela Llambías, Paulo Sexual differences in risk-taking behaviour of the Southern house wren during the nestling rearing stage
topic_facet	Brood value Harm-to-offspring Life-history traits Predation risk Troglodytes
description	When faced with a predator near the nest, breeding birds faced a dilemma: to continue providing parental care to their offspring exposing themselves to risk or to desert the nest for a brief period of time, exposing their offspring to harm due to the suspension of parental brooding and feeding. In this study, we analysed the response of nesting Southern house wrens (Troglodytes aedon musculus) to a predator model placed near the nest. The experiment was performed in 56 nests when nestling were 3–4 or 10–12 days old. The model (a plastic decoy of the Great Horned Owl Bubo virginianus) was placed at 3 m from the nest. Parent risk-taking was measured as the time elapsed for males and females to resume parental activities during the exposition to the model. We found that males and females delayed parental visits when exposed to the predator model, but females resumed them faster than males, irrespectively of the nesting stage. We also found that males refused to enter to the nest more frequently than females when exposed to the predator model. No effect of breeding experience or nesting stages was noted in the risk taking behaviour of adults. We suggest that sexual differences detected in this species reflect the higher ability of females to cope with the nestling needs and its lower lifetime expectancy. © 2013, Springer-Verlag Berlin Heidelberg and ISPA.
author	Fernandez, Gustavo Javier Corral, Maria Gabriela Llambías, Paulo
author_facet	Fernandez, Gustavo Javier Corral, Maria Gabriela Llambías, Paulo
author_sort	Fernandez, Gustavo Javier
title	Sexual differences in risk-taking behaviour of the Southern house wren during the nestling rearing stage
title_short	Sexual differences in risk-taking behaviour of the Southern house wren during the nestling rearing stage
title_full	Sexual differences in risk-taking behaviour of the Southern house wren during the nestling rearing stage
title_fullStr	Sexual differences in risk-taking behaviour of the Southern house wren during the nestling rearing stage
title_full_unstemmed	Sexual differences in risk-taking behaviour of the Southern house wren during the nestling rearing stage
title_sort	sexual differences in risk-taking behaviour of the southern house wren during the nestling rearing stage
publishDate	2013
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08739749_v18_n1_p11_Fernandez http://hdl.handle.net/20.500.12110/paper_08739749_v18_n1_p11_Fernandez
work_keys_str_mv	AT fernandezgustavojavier sexualdifferencesinrisktakingbehaviourofthesouthernhousewrenduringthenestlingrearingstage AT corralmariagabriela sexualdifferencesinrisktakingbehaviourofthesouthernhousewrenduringthenestlingrearingstage AT llambiaspaulo sexualdifferencesinrisktakingbehaviourofthesouthernhousewrenduringthenestlingrearingstage
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Sexual differences in risk-taking behaviour of the Southern house wren during the nestling rearing stage

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