Parental Risk-Taking Behaviour and Nest Defence during the Nestling Rearing Stage in Northern House Wrens Troglodytes aedon

Risk-taking behaviour of short lived nesting birds is often explained in relation to the reproductive value of offspring (the reproductive value hypothesis) and the harm that the absence of parental care can cause to nestlings (risk of harm-to-offspring hypothesis). The reproductive value hypothesis...

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Detalles Bibliográficos
Publicado: 2013
Materias:
brood value
nest defence
nestling vulnerability
predation risk
risk taking
nest box
nestling
parent-offspring interaction
parental care
raptor
reproductive strategy
vulnerability
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00016454_v48_n1_p55_Fernandez
http://hdl.handle.net/20.500.12110/paper_00016454_v48_n1_p55_Fernandez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00016454_v48_n1_p55_Fernandez
record_format dspace
spelling paper:paper_00016454_v48_n1_p55_Fernandez2023-06-08T14:20:56Z Parental Risk-Taking Behaviour and Nest Defence during the Nestling Rearing Stage in Northern House Wrens Troglodytes aedon brood value nest defence nestling vulnerability predation risk risk taking nest box nestling parent-offspring interaction parental care predation risk raptor reproductive strategy vulnerability Risk-taking behaviour of short lived nesting birds is often explained in relation to the reproductive value of offspring (the reproductive value hypothesis) and the harm that the absence of parental care can cause to nestlings (risk of harm-to-offspring hypothesis). The reproductive value hypothesis predicts that the risk assumed by adults should increases with nestling age, whereas the risk of harm-to-offspring hypothesis predicts the opposite pattern. We assessed the risk-taking behaviour of nesting males and females Northern House Wrens, Troglodytes aedon, faced with a predation threat (plastic owl model) when rearing 3-4 and 10-12 days old nestlings. We used the time elapsed until parents first entered the nest-box as a measure of risk-taking behaviour and alarm calling rate as a proxy of nest defence. Females resumed sooner parental activities when exposed to the model when nestlings were young, supporting the risk of harm-to-offspring hypothesis. In contrast, the time lasted to resume parental duties by males did not differ between nestling ages. Alarm calling rate increased with the nestling stage, as predicted by the reproductive value hypothesis. We suggest that nesting House Wrens responded to both nestling requirements and to the reproductive value of the brood, assuming greater risks when nestlings are more vulnerable and a more intense nest defence when nestlings are older. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00016454_v48_n1_p55_Fernandez http://hdl.handle.net/20.500.12110/paper_00016454_v48_n1_p55_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
nest defence
nestling vulnerability
predation risk
risk taking
nest box
nestling
parent-offspring interaction
parental care
predation risk
raptor
reproductive strategy
vulnerability
spellingShingle brood value
nest defence
nestling vulnerability
predation risk
risk taking
nest box
nestling
parent-offspring interaction
parental care
predation risk
raptor
reproductive strategy
vulnerability
Parental Risk-Taking Behaviour and Nest Defence during the Nestling Rearing Stage in Northern House Wrens Troglodytes aedon
topic_facet brood value
nest defence
nestling vulnerability
predation risk
risk taking
nest box
nestling
parent-offspring interaction
parental care
predation risk
raptor
reproductive strategy
vulnerability
description Risk-taking behaviour of short lived nesting birds is often explained in relation to the reproductive value of offspring (the reproductive value hypothesis) and the harm that the absence of parental care can cause to nestlings (risk of harm-to-offspring hypothesis). The reproductive value hypothesis predicts that the risk assumed by adults should increases with nestling age, whereas the risk of harm-to-offspring hypothesis predicts the opposite pattern. We assessed the risk-taking behaviour of nesting males and females Northern House Wrens, Troglodytes aedon, faced with a predation threat (plastic owl model) when rearing 3-4 and 10-12 days old nestlings. We used the time elapsed until parents first entered the nest-box as a measure of risk-taking behaviour and alarm calling rate as a proxy of nest defence. Females resumed sooner parental activities when exposed to the model when nestlings were young, supporting the risk of harm-to-offspring hypothesis. In contrast, the time lasted to resume parental duties by males did not differ between nestling ages. Alarm calling rate increased with the nestling stage, as predicted by the reproductive value hypothesis. We suggest that nesting House Wrens responded to both nestling requirements and to the reproductive value of the brood, assuming greater risks when nestlings are more vulnerable and a more intense nest defence when nestlings are older.
title Parental Risk-Taking Behaviour and Nest Defence during the Nestling Rearing Stage in Northern House Wrens Troglodytes aedon
title_short Parental Risk-Taking Behaviour and Nest Defence during the Nestling Rearing Stage in Northern House Wrens Troglodytes aedon
title_full Parental Risk-Taking Behaviour and Nest Defence during the Nestling Rearing Stage in Northern House Wrens Troglodytes aedon
title_fullStr Parental Risk-Taking Behaviour and Nest Defence during the Nestling Rearing Stage in Northern House Wrens Troglodytes aedon
title_full_unstemmed Parental Risk-Taking Behaviour and Nest Defence during the Nestling Rearing Stage in Northern House Wrens Troglodytes aedon
title_sort parental risk-taking behaviour and nest defence during the nestling rearing stage in northern house wrens troglodytes aedon
publishDate 2013
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00016454_v48_n1_p55_Fernandez
http://hdl.handle.net/20.500.12110/paper_00016454_v48_n1_p55_Fernandez
_version_ 1768543303027916800

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