Winter segregation of migrant European robins Erithacus rubecula in relation to sex, age and size
Identifieur interne : 001001 ( Istex/Corpus ); précédent : 001000; suivant : 001002Winter segregation of migrant European robins Erithacus rubecula in relation to sex, age and size
Auteurs : Paulo Catry ; Ana Campos ; Vítor Almada ; Will CresswellSource :
- Journal of Avian Biology [ 0908-8857 ] ; 2004-05.
Abstract
Birds often show some form of social segregation during winter, both at large geographical scales (a consequence of differential migration) and at the regional or local level, when comparing different habitats or micro‐habitats. However, our understanding of the mechanisms underlying such patterns is still poor. These issues have been rarely investigated in migratory Old‐World passerines, particularly with respect to differences between the sexes. In this study, we show that female European robins Erithacus rubecula (sexed by molecular techniques) greatly outnumber males in southern Iberia, which confirms that this species is a differential migrant with a strong latitudinal segregation of the sexes. Furthermore, sex, age and body size influence the habitat distribution of robins in winter. Subordinate birds (females, juveniles and small individuals) were generally more common in habitats with a greater shrub development, and comparatively scarce in woodlands with relatively little undergrowth. Birds wintering in woodlands were in better condition (assessed by breast‐muscle scoring) than birds wintering in shrubland. These results are consistent with the hypothesis that proposes that social dominance, mediated by differences in size and experience, is important in determining the habitat segregation of sex and age classes. The alternative hypothesis (habitat specialization), although not specifically supported by our findings, cannot be ruled out on the basis of the available evidence.
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DOI: 10.1111/j.0908-8857.2004.03266.x
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However, our understanding of the mechanisms underlying such patterns is still poor. These issues have been rarely investigated in migratory Old‐World passerines, particularly with respect to differences between the sexes. In this study, we show that female European robins Erithacus rubecula (sexed by molecular techniques) greatly outnumber males in southern Iberia, which confirms that this species is a differential migrant with a strong latitudinal segregation of the sexes. Furthermore, sex, age and body size influence the habitat distribution of robins in winter. Subordinate birds (females, juveniles and small individuals) were generally more common in habitats with a greater shrub development, and comparatively scarce in woodlands with relatively little undergrowth. Birds wintering in woodlands were in better condition (assessed by breast‐muscle scoring) than birds wintering in shrubland. These results are consistent with the hypothesis that proposes that social dominance, mediated by differences in size and experience, is important in determining the habitat segregation of sex and age classes. The alternative hypothesis (habitat specialization), although not specifically supported by our findings, cannot be ruled out on the basis of the available evidence.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>Paulo Catry</name></json:item><json:item><name>Ana Campos</name></json:item><json:item><name>Vítor Almada</name></json:item><json:item><name>Will Cresswell</name></json:item></author><articleId><json:string>JAV3266</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>Birds often show some form of social segregation during winter, both at large geographical scales (a consequence of differential migration) and at the regional or local level, when comparing different habitats or micro‐habitats. However, our understanding of the mechanisms underlying such patterns is still poor. These issues have been rarely investigated in migratory Old‐World passerines, particularly with respect to differences between the sexes. In this study, we show that female European robins Erithacus rubecula (sexed by molecular techniques) greatly outnumber males in southern Iberia, which confirms that this species is a differential migrant with a strong latitudinal segregation of the sexes. Furthermore, sex, age and body size influence the habitat distribution of robins in winter. Subordinate birds (females, juveniles and small individuals) were generally more common in habitats with a greater shrub development, and comparatively scarce in woodlands with relatively little undergrowth. Birds wintering in woodlands were in better condition (assessed by breast‐muscle scoring) than birds wintering in shrubland. These results are consistent with the hypothesis that proposes that social dominance, mediated by differences in size and experience, is important in determining the habitat segregation of sex and age classes. The alternative hypothesis (habitat specialization), although not specifically supported by our findings, cannot be ruled out on the basis of the available evidence.</abstract><qualityIndicators><score>6.439</score><pdfVersion>1.3</pdfVersion><pdfPageSize>562 x 789 pts</pdfPageSize><refBibsNative>true</refBibsNative><abstractCharCount>1509</abstractCharCount><pdfWordCount>3883</pdfWordCount><pdfCharCount>23831</pdfCharCount><pdfPageCount>6</pdfPageCount><abstractWordCount>213</abstractWordCount></qualityIndicators><title>Winter segregation of migrant European robins Erithacus rubecula in relation to sex, age and size</title><refBibs><json:item><author><json:item><name>F. Andriensen</name></json:item><json:item><name>A. A. 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Wunderle</name></json:item></author><host><volume>112</volume><pages><last>946</last><first>931</first></pages><author></author><title>Auk</title></host><title>Population characteristics of black‐throated blue warblers wintering in three sites on Puerto Rico</title></json:item></refBibs><genre><json:string>article</json:string></genre><host><volume>35</volume><publisherId><json:string>JAV</json:string></publisherId><pages><total>6</total><last>209</last><first>204</first></pages><issn><json:string>0908-8857</json:string></issn><issue>3</issue><genre><json:string>journal</json:string></genre><language><json:string>unknown</json:string></language><eissn><json:string>1600-048X</json:string></eissn><title>Journal of Avian Biology</title><doi><json:string>10.1111/(ISSN)1600-048X</json:string></doi></host><categories><wos><json:string>science</json:string><json:string>ornithology</json:string></wos><scienceMetrix><json:string>natural sciences</json:string><json:string>biology</json:string><json:string>ornithology</json:string></scienceMetrix></categories><publicationDate>2004</publicationDate><copyrightDate>2004</copyrightDate><doi><json:string>10.1111/j.0908-8857.2004.03266.x</json:string></doi><id>258E43BBFE51164A7F19305D979A9D3A0CD6E884</id><score>1</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/258E43BBFE51164A7F19305D979A9D3A0CD6E884/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/258E43BBFE51164A7F19305D979A9D3A0CD6E884/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/258E43BBFE51164A7F19305D979A9D3A0CD6E884/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main" xml:lang="en">Winter segregation of migrant European robins Erithacus rubecula in relation to sex, age and size</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>Munksgaard International Publishers</publisher><pubPlace>Copenhagen</pubPlace><availability><p>WILEY</p></availability><date>2004</date></publicationStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a" type="main" xml:lang="en">Winter segregation of migrant European robins Erithacus rubecula in relation to sex, age and size</title><author xml:id="author-1"><persName><forename type="first">Paulo</forename><surname>Catry</surname></persName></author><author xml:id="author-2"><persName><forename type="first">Ana</forename><surname>Campos</surname></persName></author><author xml:id="author-3"><persName><forename type="first">Vítor</forename><surname>Almada</surname></persName></author><author xml:id="author-4"><persName><forename type="first">Will</forename><surname>Cresswell</surname></persName></author></analytic><monogr><title level="j">Journal of Avian Biology</title><title level="j" type="abbrev">Journal of Avian Biology</title><idno type="pISSN">0908-8857</idno><idno type="eISSN">1600-048X</idno><idno type="DOI">10.1111/(ISSN)1600-048X</idno><imprint><publisher>Munksgaard International Publishers</publisher><pubPlace>Copenhagen</pubPlace><date type="published" when="2004-05"></date><biblScope unit="volume">35</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="204">204</biblScope><biblScope unit="page" to="209">209</biblScope></imprint></monogr><idno type="istex">258E43BBFE51164A7F19305D979A9D3A0CD6E884</idno><idno type="DOI">10.1111/j.0908-8857.2004.03266.x</idno><idno type="ArticleID">JAV3266</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>2004</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>Birds often show some form of social segregation during winter, both at large geographical scales (a consequence of differential migration) and at the regional or local level, when comparing different habitats or micro‐habitats. However, our understanding of the mechanisms underlying such patterns is still poor. These issues have been rarely investigated in migratory Old‐World passerines, particularly with respect to differences between the sexes. In this study, we show that female European robins Erithacus rubecula (sexed by molecular techniques) greatly outnumber males in southern Iberia, which confirms that this species is a differential migrant with a strong latitudinal segregation of the sexes. Furthermore, sex, age and body size influence the habitat distribution of robins in winter. Subordinate birds (females, juveniles and small individuals) were generally more common in habitats with a greater shrub development, and comparatively scarce in woodlands with relatively little undergrowth. Birds wintering in woodlands were in better condition (assessed by breast‐muscle scoring) than birds wintering in shrubland. These results are consistent with the hypothesis that proposes that social dominance, mediated by differences in size and experience, is important in determining the habitat segregation of sex and age classes. The alternative hypothesis (habitat specialization), although not specifically supported by our findings, cannot be ruled out on the basis of the available evidence.</p></abstract></profileDesc><revisionDesc><change when="2004-05">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/258E43BBFE51164A7F19305D979A9D3A0CD6E884/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component version="2.0" type="serialArticle" xml:lang="en"><header><publicationMeta level="product"><publisherInfo><publisherName>Munksgaard International Publishers</publisherName><publisherLoc>Copenhagen</publisherLoc></publisherInfo><doi origin="wiley" registered="yes">10.1111/(ISSN)1600-048X</doi><issn type="print">0908-8857</issn><issn type="electronic">1600-048X</issn><idGroup><id type="product" value="JAV"></id><id type="publisherDivision" value="ST"></id></idGroup><titleGroup><title type="main" sort="JOURNAL OF AVIAN BIOLOGY">Journal of Avian Biology</title><title type="short">Journal of Avian Biology</title></titleGroup></publicationMeta><publicationMeta level="part" position="05003"><doi origin="wiley">10.1111/jav.2004.35.issue-3</doi><numberingGroup><numbering type="journalVolume" number="35">35</numbering><numbering type="journalIssue" number="3">3</numbering></numberingGroup><coverDate startDate="2004-05">May 2004</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="0020400" status="forIssue"><doi origin="wiley">10.1111/j.0908-8857.2004.03266.x</doi><idGroup><id type="unit" value="JAV3266"></id><id type="supplier" value="jav3266"></id></idGroup><countGroup><count type="pageTotal" number="6"></count></countGroup><titleGroup><title type="tocHeading1">Research letters</title></titleGroup><eventGroup><event type="firstOnline" date="2004-04-30"></event><event type="publishedOnlineFinalForm" date="2004-04-30"></event><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:2.3.2 mode:FullText source:FullText result:FullText" date="2010-03-10"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.8.8" date="2014-01-28"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-10-23"></event></eventGroup><numberingGroup><numbering type="pageFirst" number="204">204</numbering><numbering type="pageLast" number="209">209</numbering></numberingGroup><correspondenceTo>P. Catry (correspondence) and V. Almada, Unidade de Investiga ção em Eco‐Etologia, Instituto Superior de Psicologia Aplicada, Rua Jardim do Tabaco 44, 1149‐041 Lisboa, Portugal. A. Campos, Quinta de São Caetano. 7000‐173 Évora, Portugal. W. Cresswell, University of St. Andrews, School of Biology, Bute Medical Building, St. Andrews, Fife, KY16 9TS, UK. 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However, our understanding of the mechanisms underlying such patterns is still poor. These issues have been rarely investigated in migratory Old‐World passerines, particularly with respect to differences between the sexes. In this study, we show that female European robins <i>Erithacus rubecula</i> (sexed by molecular techniques) greatly outnumber males in southern Iberia, which confirms that this species is a differential migrant with a strong latitudinal segregation of the sexes. Furthermore, sex, age and body size influence the habitat distribution of robins in winter. Subordinate birds (females, juveniles and small individuals) were generally more common in habitats with a greater shrub development, and comparatively scarce in woodlands with relatively little undergrowth. Birds wintering in woodlands were in better condition (assessed by breast‐muscle scoring) than birds wintering in shrubland. 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However, our understanding of the mechanisms underlying such patterns is still poor. These issues have been rarely investigated in migratory Old‐World passerines, particularly with respect to differences between the sexes. In this study, we show that female European robins Erithacus rubecula (sexed by molecular techniques) greatly outnumber males in southern Iberia, which confirms that this species is a differential migrant with a strong latitudinal segregation of the sexes. Furthermore, sex, age and body size influence the habitat distribution of robins in winter. Subordinate birds (females, juveniles and small individuals) were generally more common in habitats with a greater shrub development, and comparatively scarce in woodlands with relatively little undergrowth. Birds wintering in woodlands were in better condition (assessed by breast‐muscle scoring) than birds wintering in shrubland. These results are consistent with the hypothesis that proposes that social dominance, mediated by differences in size and experience, is important in determining the habitat segregation of sex and age classes. The alternative hypothesis (habitat specialization), although not specifically supported by our findings, cannot be ruled out on the basis of the available evidence.</abstract><relatedItem type="host"><titleInfo><title>Journal of Avian Biology</title></titleInfo><titleInfo type="abbreviated"><title>Journal of Avian Biology</title></titleInfo><genre type="journal">journal</genre><identifier type="ISSN">0908-8857</identifier><identifier type="eISSN">1600-048X</identifier><identifier type="DOI">10.1111/(ISSN)1600-048X</identifier><identifier type="PublisherID">JAV</identifier><part><date>2004</date><detail type="volume"><caption>vol.</caption><number>35</number></detail><detail type="issue"><caption>no.</caption><number>3</number></detail><extent unit="pages"><start>204</start><end>209</end><total>6</total></extent></part></relatedItem><identifier type="istex">258E43BBFE51164A7F19305D979A9D3A0CD6E884</identifier><identifier type="DOI">10.1111/j.0908-8857.2004.03266.x</identifier><identifier type="ArticleID">JAV3266</identifier><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>Munksgaard International Publishers</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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