Winter feeding influences the cost of living in boreal passerines

The plastic regulation of internal energy reserves is acknowledged as the main adaptive response to winter conditions of resident small birds in northern latitudes, a strategy that may be altered whenever human-supplemented food is available. We investigated the effects of supplementary feeding on t...

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Detalles Bibliográficos
Autores: Broggi, Juli, Hohtola, Esa, Koivula, Kari
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/219837
Acceso en línea:http://hdl.handle.net/10261/219837
Access Level:acceso abierto
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spelling Winter feeding influences the cost of living in boreal passerinesBroggi, JuliHohtola, EsaKoivula, KariThe plastic regulation of internal energy reserves is acknowledged as the main adaptive response to winter conditions of resident small birds in northern latitudes, a strategy that may be altered whenever human-supplemented food is available. We investigated the effects of supplementary feeding on the energy management strategy of two wild passerine species, the Willow Tit Poecile montanus and Blue Tit Cyanistes caeruleus, wintering in boreal conditions by measuring body mass and the energy cost of living, i.e. basal metabolic rate. Individuals of both species were heavier, larger and exhibited a higher energy cost of living when captured at the feeders than were individuals captured away from feeders. Fed Willow Tits expended more energy in maintenance, although this difference disappeared once mass was accounted for. Conversely, Blue Tits at feeders had higher mass-adjusted energy cost of living, but only at low ambient temperatures. The results indicate that winter feeding has species-specific effects on overall energy management strategy and modifies the response to environmental conditions of wintering passerines.Blackwell PublishingConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2020202020202020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/219837reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1111/ibi.12862Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2198372026-05-22T06:33:51Z
dc.title.none.fl_str_mv Winter feeding influences the cost of living in boreal passerines
title Winter feeding influences the cost of living in boreal passerines
spellingShingle Winter feeding influences the cost of living in boreal passerines
Broggi, Juli
title_short Winter feeding influences the cost of living in boreal passerines
title_full Winter feeding influences the cost of living in boreal passerines
title_fullStr Winter feeding influences the cost of living in boreal passerines
title_full_unstemmed Winter feeding influences the cost of living in boreal passerines
title_sort Winter feeding influences the cost of living in boreal passerines
dc.creator.none.fl_str_mv Broggi, Juli
Hohtola, Esa
Koivula, Kari
author Broggi, Juli
author_facet Broggi, Juli
Hohtola, Esa
Koivula, Kari
author_role author
author2 Hohtola, Esa
Koivula, Kari
author2_role author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
description The plastic regulation of internal energy reserves is acknowledged as the main adaptive response to winter conditions of resident small birds in northern latitudes, a strategy that may be altered whenever human-supplemented food is available. We investigated the effects of supplementary feeding on the energy management strategy of two wild passerine species, the Willow Tit Poecile montanus and Blue Tit Cyanistes caeruleus, wintering in boreal conditions by measuring body mass and the energy cost of living, i.e. basal metabolic rate. Individuals of both species were heavier, larger and exhibited a higher energy cost of living when captured at the feeders than were individuals captured away from feeders. Fed Willow Tits expended more energy in maintenance, although this difference disappeared once mass was accounted for. Conversely, Blue Tits at feeders had higher mass-adjusted energy cost of living, but only at low ambient temperatures. The results indicate that winter feeding has species-specific effects on overall energy management strategy and modifies the response to environmental conditions of wintering passerines.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/219837
url http://hdl.handle.net/10261/219837
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1111/ibi.12862
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Blackwell Publishing
publisher.none.fl_str_mv Blackwell Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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