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Titre du document / Document title

Social structure of Andean Condor roosts: Influence of sex, age, and season

Auteur(s) / Author(s)

DONAZAR José A. (1) ; FEIJOO Juan E. (2) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Department of Applied Biology, Estación Biológica de Doñana, C.S.I.C., Avda Ma Luisa s/n, 41013 Sevilla, ESPAGNE
(2) Museo de Zoologia de la Universidad de Córdoba, Avda Vélez Sarsfield 299, Córdoba 5000, ARGENTINE

Résumé / Abstract

We examined how Andean Condors (Vultur gryphus) segregate by sex and age in summer and autumn at a communal roost in the Patagonian Andes. Preferred roosting places received earlier sun at sunrise (summer) and later sun at sunset (autumn); sheltered crevices were also selected. Individuals strongly competed for preferred places: adults dominated juveniles and within each age class males dominated females. Although individuals preferred roosting places independent of their dominance status, fighting and subsequent relocating led to a defined social structure at the roost. Sunny exposures may allow occupants to maximize time available for foraging, plumage care, and maintenance, and to avoid cold stress. Irregularity in the spatial distribution and aggregation patterns of Andean Condors may be the result of requirements for roosting. Availability of adequate roost places should be considered in conservation programs.

Revue / Journal Title

The Condor    ISSN  0010-5422   CODEN CNDRAB 

Source / Source

2002, vol. 104, no4, pp. 832-837 [6 page(s) (article)] (32 ref.)

Langue / Language

Anglais

Editeur / Publisher

University of California Press, Berkeley, CA, ETATS-UNIS  (1900) (Revue)

Mots-clés anglais / English Keywords

Vertebrata

;

Aves

;

Interindividual relation

;

Environmental factor

;

Raptor

;

America

;

South America

;

Argentina

;

Andes

;

National park

;

Seasonal variation

;

Interindividual competition

;

Age

;

Sex

;

Social hierarchy

;

Social structure

;

Perching behavior

;

Roost

;

Mots-clés français / French Keywords

Accipitridae

;

Vertebrata

;

Aves

;

Relation interindividuelle

;

Facteur milieu

;

Rapace

;

Amérique

;

Amérique du Sud

;

Parc National Condorito

;

Vultur gryphus

;

Argentine

;

Andes

;

Parc national

;

Variation saisonnière

;

Compétition interindividuelle

;

Age

;

Sexe

;

Hiérarchie sociale

;

Structure sociale

;

Comportement perchage

;

Perchoir

;

Mots-clés espagnols / Spanish Keywords

Vertebrata

;

Aves

;

Relación interindividual

;

Factor medio

;

Rapaz

;

America

;

America del sur

;

Argentina

;

Andes

;

Parque nacional

;

Variación estacional

;

Competencia interindividual

;

Edad

;

Sexo

;

Jerarquía social

;

Estructura social

;

Perching behavior

;

Percha

;

Mots-clés d'auteur / Author Keywords

age

;

Andean Condor

;

dominance. roost

;

sex

;

social structure

;

Vultur gryphus

;

Localisation / Location

INIST-CNRS, Cote INIST : 4858, 35400010546514.0130

Nº notice refdoc (ud4) : 14022914



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