Foraging behavior and microhabitat selection of the white-crested Elaenia (Elaenia albiceps chilensls) in patagonia forests

The study of foraging behavior is useful to understand how birds use the environment and what factors play an important role In habitat selection. We evaluated the maneuvers used to capture prey and the selection of foraging microhabitat by the White-crested Elaenia (Elaenia albiceps chilensis), a v...

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Autores principales: Chust, Lucía, Cueto, Victor Rodolfo, Bravo, Susana Patricia
Publicado: 2012
Materias:
Argentina
Elaenia albiceps chilensis
Foraging behavior
Frugivore-insectivore birds
Microhabitat selection
Neotropical austral migrants
White-crested Elaenia
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10754377_v23_n3_p313_Chust
http://hdl.handle.net/20.500.12110/paper_10754377_v23_n3_p313_Chust
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_10754377_v23_n3_p313_Chust
record_format dspace
spelling paper:paper_10754377_v23_n3_p313_Chust2023-06-08T16:05:18Z Foraging behavior and microhabitat selection of the white-crested Elaenia (Elaenia albiceps chilensls) in patagonia forests Chust, Lucía Cueto, Victor Rodolfo Bravo, Susana Patricia Argentina Elaenia albiceps chilensis Foraging behavior Frugivore-insectivore birds Microhabitat selection Neotropical austral migrants White-crested Elaenia The study of foraging behavior is useful to understand how birds use the environment and what factors play an important role In habitat selection. We evaluated the maneuvers used to capture prey and the selection of foraging microhabitat by the White-crested Elaenia (Elaenia albiceps chilensis), a very abundant migratory bird In Patagonian forests during spring and summer. Behavioral observations were made in mixed forests of Cohlue (Nothofagus dombeyi) and Cypress (Austrocedrvs chilensis). We compared patterns between forests that experienced tree extraction of the first species to others in which no human alterations took place. In both forests conditions, White-crested Elaenlas mainly used sally-hovering to capture prey and to a lesser extent glean and sally-strike. The most commonly used substrate for prey capture was the foliage. The foraging microhabitat selected in both sites was the canopy, and Coihue trees. The rest of the vegetation profile and other species of trees and shrubs were used less than expected by chance. It Is thought that birds that capture their prey by hovering are not constrained by the structure of the vegetation; however, White-crested Elaenlas selected specific foraging microhabitats, suggesting that other environmental variables, such as differences In food supply, could drive the foraging behavior of this species. Coihue trees extraction in the past did not change the foraging behavior of White-crested Elaenias, and it could be negative for populations that eventually face alteration of native evergreen forests of Patagonia. © The Neotropical Ornithological Society. Fil:Chust, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cueto, V.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bravo, S.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10754377_v23_n3_p313_Chust http://hdl.handle.net/20.500.12110/paper_10754377_v23_n3_p313_Chust
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Argentina
Elaenia albiceps chilensis
Foraging behavior
Frugivore-insectivore birds
Microhabitat selection
Neotropical austral migrants
White-crested Elaenia
spellingShingle Argentina
Elaenia albiceps chilensis
Foraging behavior
Frugivore-insectivore birds
Microhabitat selection
Neotropical austral migrants
White-crested Elaenia
Chust, Lucía
Cueto, Victor Rodolfo
Bravo, Susana Patricia
Foraging behavior and microhabitat selection of the white-crested Elaenia (Elaenia albiceps chilensls) in patagonia forests
topic_facet Argentina
Elaenia albiceps chilensis
Foraging behavior
Frugivore-insectivore birds
Microhabitat selection
Neotropical austral migrants
White-crested Elaenia
description The study of foraging behavior is useful to understand how birds use the environment and what factors play an important role In habitat selection. We evaluated the maneuvers used to capture prey and the selection of foraging microhabitat by the White-crested Elaenia (Elaenia albiceps chilensis), a very abundant migratory bird In Patagonian forests during spring and summer. Behavioral observations were made in mixed forests of Cohlue (Nothofagus dombeyi) and Cypress (Austrocedrvs chilensis). We compared patterns between forests that experienced tree extraction of the first species to others in which no human alterations took place. In both forests conditions, White-crested Elaenlas mainly used sally-hovering to capture prey and to a lesser extent glean and sally-strike. The most commonly used substrate for prey capture was the foliage. The foraging microhabitat selected in both sites was the canopy, and Coihue trees. The rest of the vegetation profile and other species of trees and shrubs were used less than expected by chance. It Is thought that birds that capture their prey by hovering are not constrained by the structure of the vegetation; however, White-crested Elaenlas selected specific foraging microhabitats, suggesting that other environmental variables, such as differences In food supply, could drive the foraging behavior of this species. Coihue trees extraction in the past did not change the foraging behavior of White-crested Elaenias, and it could be negative for populations that eventually face alteration of native evergreen forests of Patagonia. © The Neotropical Ornithological Society.
author Chust, Lucía
Cueto, Victor Rodolfo
Bravo, Susana Patricia
author_facet Chust, Lucía
Cueto, Victor Rodolfo
Bravo, Susana Patricia
author_sort Chust, Lucía
title Foraging behavior and microhabitat selection of the white-crested Elaenia (Elaenia albiceps chilensls) in patagonia forests
title_short Foraging behavior and microhabitat selection of the white-crested Elaenia (Elaenia albiceps chilensls) in patagonia forests
title_full Foraging behavior and microhabitat selection of the white-crested Elaenia (Elaenia albiceps chilensls) in patagonia forests
title_fullStr Foraging behavior and microhabitat selection of the white-crested Elaenia (Elaenia albiceps chilensls) in patagonia forests
title_full_unstemmed Foraging behavior and microhabitat selection of the white-crested Elaenia (Elaenia albiceps chilensls) in patagonia forests
title_sort foraging behavior and microhabitat selection of the white-crested elaenia (elaenia albiceps chilensls) in patagonia forests
publishDate 2012
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10754377_v23_n3_p313_Chust
http://hdl.handle.net/20.500.12110/paper_10754377_v23_n3_p313_Chust
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AT bravosusanapatricia foragingbehaviorandmicrohabitatselectionofthewhitecrestedelaeniaelaeniaalbicepschilenslsinpatagoniaforests
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