Foraging behaviour of an omnivorous bird varies in mixed-species groups
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1080/03949370.2022.2120082 http://hdl.handle.net/11449/245994 |
Resumo: | In mixed-species groups (MSGs), individuals from different species may locate and communicate about the presence of predators and prey quickly and accurately but may compete for food and favourable positions in the flock. Thus, foraging behaviour is likely to change when individuals participate in MSGs compared with single-species groups (SSGs). In a highly seasonal tropical environment, the foraging behaviour of omnivorous birds may also vary with fluctuations in food availability, weather, and breeding conditions. Here, we observed the foraging behaviour (food item consumed and foraging substrate) of an insectivorous-granivorous songbird, the Coal-crested finch (Charitospiza eucosma), in a savanna in central Brazil, while simultaneously sampling the grass seed production. Birds were more likely to consume grass seeds and forage on lower vertical strata (i.e., ground or herbaceous layers) in MSGs than in other social contexts (SSGs, pair or alone), suggesting they are facing interference competition from other species in MSGs or obtaining antipredator benefits in MSGs that enable them to explore preferred food resources in microhabitats more exposed to predators. As expected, Coal-crested finches were more likely to feed on grass seeds and forage on lower vertical strata when grass seed production is abundant, suggesting that they switch their diet according to the availability of their main food items: grass seeds and invertebrates. Weather and breeding seasonalities had small effects on foraging behaviour. Our results show that MSGs may have a major role in the foraging behaviour of omnivorous birds even considering the seasonal mismatching of their main food items. |
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Foraging behaviour of an omnivorous bird varies in mixed-species groupsCerradoCoal-crested finchforaging plasticitygranivorymixed-species flocksphenologyIn mixed-species groups (MSGs), individuals from different species may locate and communicate about the presence of predators and prey quickly and accurately but may compete for food and favourable positions in the flock. Thus, foraging behaviour is likely to change when individuals participate in MSGs compared with single-species groups (SSGs). In a highly seasonal tropical environment, the foraging behaviour of omnivorous birds may also vary with fluctuations in food availability, weather, and breeding conditions. Here, we observed the foraging behaviour (food item consumed and foraging substrate) of an insectivorous-granivorous songbird, the Coal-crested finch (Charitospiza eucosma), in a savanna in central Brazil, while simultaneously sampling the grass seed production. Birds were more likely to consume grass seeds and forage on lower vertical strata (i.e., ground or herbaceous layers) in MSGs than in other social contexts (SSGs, pair or alone), suggesting they are facing interference competition from other species in MSGs or obtaining antipredator benefits in MSGs that enable them to explore preferred food resources in microhabitats more exposed to predators. As expected, Coal-crested finches were more likely to feed on grass seeds and forage on lower vertical strata when grass seed production is abundant, suggesting that they switch their diet according to the availability of their main food items: grass seeds and invertebrates. Weather and breeding seasonalities had small effects on foraging behaviour. Our results show that MSGs may have a major role in the foraging behaviour of omnivorous birds even considering the seasonal mismatching of their main food items.Programa de Pós-Graduação em Ecologia Universidade de Brasília, DFLaboratório de Comportamento Animal Departamento de Zoologia Universidade de Brasília, DFEmbrapa Genetic Resources and Biotechnology Brazilian Corporation of Agricultural Research/EmbrapaDepartamento de Biodiversidade Laboratório de Fenologia Instituto de Biociências Universidade Estadual Paulista UNESPDepartamento de Biodiversidade Laboratório de Fenologia Instituto de Biociências Universidade Estadual Paulista UNESPUniversidade de Brasília (UnB)Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Universidade Estadual Paulista (UNESP)Diniz, PedroValls, José F.M.Ramos, Desirée M. [UNESP]2023-07-29T12:28:56Z2023-07-29T12:28:56Z2022-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1080/03949370.2022.2120082Ethology Ecology and Evolution.1828-71310394-9370http://hdl.handle.net/11449/24599410.1080/03949370.2022.21200822-s2.0-85139111715Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEthology Ecology and Evolutioninfo:eu-repo/semantics/openAccess2023-07-29T12:28:56Zoai:repositorio.unesp.br:11449/245994Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-07-29T12:28:56Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Foraging behaviour of an omnivorous bird varies in mixed-species groups |
title |
Foraging behaviour of an omnivorous bird varies in mixed-species groups |
spellingShingle |
Foraging behaviour of an omnivorous bird varies in mixed-species groups Diniz, Pedro Cerrado Coal-crested finch foraging plasticity granivory mixed-species flocks phenology |
title_short |
Foraging behaviour of an omnivorous bird varies in mixed-species groups |
title_full |
Foraging behaviour of an omnivorous bird varies in mixed-species groups |
title_fullStr |
Foraging behaviour of an omnivorous bird varies in mixed-species groups |
title_full_unstemmed |
Foraging behaviour of an omnivorous bird varies in mixed-species groups |
title_sort |
Foraging behaviour of an omnivorous bird varies in mixed-species groups |
author |
Diniz, Pedro |
author_facet |
Diniz, Pedro Valls, José F.M. Ramos, Desirée M. [UNESP] |
author_role |
author |
author2 |
Valls, José F.M. Ramos, Desirée M. [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade de Brasília (UnB) Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Diniz, Pedro Valls, José F.M. Ramos, Desirée M. [UNESP] |
dc.subject.por.fl_str_mv |
Cerrado Coal-crested finch foraging plasticity granivory mixed-species flocks phenology |
topic |
Cerrado Coal-crested finch foraging plasticity granivory mixed-species flocks phenology |
description |
In mixed-species groups (MSGs), individuals from different species may locate and communicate about the presence of predators and prey quickly and accurately but may compete for food and favourable positions in the flock. Thus, foraging behaviour is likely to change when individuals participate in MSGs compared with single-species groups (SSGs). In a highly seasonal tropical environment, the foraging behaviour of omnivorous birds may also vary with fluctuations in food availability, weather, and breeding conditions. Here, we observed the foraging behaviour (food item consumed and foraging substrate) of an insectivorous-granivorous songbird, the Coal-crested finch (Charitospiza eucosma), in a savanna in central Brazil, while simultaneously sampling the grass seed production. Birds were more likely to consume grass seeds and forage on lower vertical strata (i.e., ground or herbaceous layers) in MSGs than in other social contexts (SSGs, pair or alone), suggesting they are facing interference competition from other species in MSGs or obtaining antipredator benefits in MSGs that enable them to explore preferred food resources in microhabitats more exposed to predators. As expected, Coal-crested finches were more likely to feed on grass seeds and forage on lower vertical strata when grass seed production is abundant, suggesting that they switch their diet according to the availability of their main food items: grass seeds and invertebrates. Weather and breeding seasonalities had small effects on foraging behaviour. Our results show that MSGs may have a major role in the foraging behaviour of omnivorous birds even considering the seasonal mismatching of their main food items. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-01-01 2023-07-29T12:28:56Z 2023-07-29T12:28:56Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1080/03949370.2022.2120082 Ethology Ecology and Evolution. 1828-7131 0394-9370 http://hdl.handle.net/11449/245994 10.1080/03949370.2022.2120082 2-s2.0-85139111715 |
url |
http://dx.doi.org/10.1080/03949370.2022.2120082 http://hdl.handle.net/11449/245994 |
identifier_str_mv |
Ethology Ecology and Evolution. 1828-7131 0394-9370 10.1080/03949370.2022.2120082 2-s2.0-85139111715 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Ethology Ecology and Evolution |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965382816038912 |