Life history traits and breeding success of the scarlet-headed blackbird (Amblyramphus holosericeus) in the Argentinean Pampas

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In this paper we present data on the nesting success and life history traits of the Scarlet-headed Blackbird (Amblyramphus holosericeus) nesting in the Argentinean pampas. During the 1995-1997 and 2001-2002 breeding seasons (September-December), we found 60 Scarlet-headed Blackbird nests. About 40%...

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Autores principales: Fernández, G.J., Mermoz, M.E., Llambías, P.E., Manuela Pujol, E.
Formato: Artículo publishedVersion
Publicado: 2007
Materias:
Amblyramphus holosericeus
Nest predation
Nesting behavior
Nesting success
Scarlet-headed blackbird
Territoriality
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_10754377_v18_n3_p407_Fernandez
http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_10754377_v18_n3_p407_Fernandez_oai
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Repositorio Digital de la Universidad de Buenos Aires (UBA) de Universidad de Buenos Aires
id I28-R145-paper_10754377_v18_n3_p407_Fernandez_oai
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spelling I28-R145-paper_10754377_v18_n3_p407_Fernandez_oai2020-10-19 Fernández, G.J. Mermoz, M.E. Llambías, P.E. Manuela Pujol, E. 2007 In this paper we present data on the nesting success and life history traits of the Scarlet-headed Blackbird (Amblyramphus holosericeus) nesting in the Argentinean pampas. During the 1995-1997 and 2001-2002 breeding seasons (September-December), we found 60 Scarlet-headed Blackbird nests. About 40% of these nests produced fledglings, and daily nest mortality did not differ among nesting stages (laying, incubation, nestling). Clutch size was 3 eggs, and the mean number of fledglings was 1.33 ± 0.78. Brood reduction was a common cause of nestling loss as 39% of nest with more than 1 nestling lost the last hatched one. Results obtained from experimental nests indicate that parent nest attention increases the probability of nest success as natural nests showed a lower predation rate. We suggest that the high nest attention detected in this species could be responsible for the higher nesting success compared to other sympatric marsh nesting species. However, high nest attendance could also imply an additional cost as it may constrain the time available to parents for foraging, thus limiting the food delivered to nestlings. © The Neotropical Ornithological Society. Fil:Fernández, G.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Mermoz, M.E. 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. application/pdf http://hdl.handle.net/20.500.12110/paper_10754377_v18_n3_p407_Fernandez info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Ornitol. Neotrop. 2007;18(3):407-419 Amblyramphus holosericeus Nest predation Nesting behavior Nesting success Scarlet-headed blackbird Territoriality Life history traits and breeding success of the scarlet-headed blackbird (Amblyramphus holosericeus) in the Argentinean Pampas info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_10754377_v18_n3_p407_Fernandez_oai
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-145
collection Repositorio Digital de la Universidad de Buenos Aires (UBA)
topic Amblyramphus holosericeus
Nest predation
Nesting behavior
Nesting success
Scarlet-headed blackbird
Territoriality
spellingShingle Amblyramphus holosericeus
Nest predation
Nesting behavior
Nesting success
Scarlet-headed blackbird
Territoriality
Fernández, G.J.
Mermoz, M.E.
Llambías, P.E.
Manuela Pujol, E.
Life history traits and breeding success of the scarlet-headed blackbird (Amblyramphus holosericeus) in the Argentinean Pampas
topic_facet Amblyramphus holosericeus
Nest predation
Nesting behavior
Nesting success
Scarlet-headed blackbird
Territoriality
description In this paper we present data on the nesting success and life history traits of the Scarlet-headed Blackbird (Amblyramphus holosericeus) nesting in the Argentinean pampas. During the 1995-1997 and 2001-2002 breeding seasons (September-December), we found 60 Scarlet-headed Blackbird nests. About 40% of these nests produced fledglings, and daily nest mortality did not differ among nesting stages (laying, incubation, nestling). Clutch size was 3 eggs, and the mean number of fledglings was 1.33 ± 0.78. Brood reduction was a common cause of nestling loss as 39% of nest with more than 1 nestling lost the last hatched one. Results obtained from experimental nests indicate that parent nest attention increases the probability of nest success as natural nests showed a lower predation rate. We suggest that the high nest attention detected in this species could be responsible for the higher nesting success compared to other sympatric marsh nesting species. However, high nest attendance could also imply an additional cost as it may constrain the time available to parents for foraging, thus limiting the food delivered to nestlings. © The Neotropical Ornithological Society.
format Artículo
Artículo
publishedVersion
author Fernández, G.J.
Mermoz, M.E.
Llambías, P.E.
Manuela Pujol, E.
author_facet Fernández, G.J.
Mermoz, M.E.
Llambías, P.E.
Manuela Pujol, E.
author_sort Fernández, G.J.
title Life history traits and breeding success of the scarlet-headed blackbird (Amblyramphus holosericeus) in the Argentinean Pampas
title_short Life history traits and breeding success of the scarlet-headed blackbird (Amblyramphus holosericeus) in the Argentinean Pampas
title_full Life history traits and breeding success of the scarlet-headed blackbird (Amblyramphus holosericeus) in the Argentinean Pampas
title_fullStr Life history traits and breeding success of the scarlet-headed blackbird (Amblyramphus holosericeus) in the Argentinean Pampas
title_full_unstemmed Life history traits and breeding success of the scarlet-headed blackbird (Amblyramphus holosericeus) in the Argentinean Pampas
title_sort life history traits and breeding success of the scarlet-headed blackbird (amblyramphus holosericeus) in the argentinean pampas
publishDate 2007
url http://hdl.handle.net/20.500.12110/paper_10754377_v18_n3_p407_Fernandez
http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_10754377_v18_n3_p407_Fernandez_oai
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