Titre
Sib-sib communication and the risk of prey theft in the barn owl Tyto alba
Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
Roulin, A.
Auteure/Auteur
Colliard, C.
Auteure/Auteur
Russier, F.
Auteure/Auteur
Fleury, M.
Auteure/Auteur
Grandjean, V.
Auteure/Auteur
Liens vers les personnes
Liens vers les unités
ISSN
0908-8857
Statut éditorial
Publié
Date de publication
2008
Volume
39
Numéro
6
Première page
593
Dernière page/numéro d’article
598
Peer-reviewed
Oui
Langue
anglais
Résumé
Conflicts among siblings are widespread and their resolution involves complex physical and communication tools. Observations in the barn owl Tyto alba showed that siblings vocally communicate in the absence of parents to negotiate priority of access to the impending food resources that parents will bring. In the present paper, we hypothesize and provide correlative evidence that after a parent brought a food item to their progeny, sibling competition involves vocal sib-sib communication. A food item takes a long time to be entirely consumed, and hence siblings continue to compete over prey monopolization even after parents gave a food item to a single offspring. When physical competition is pronounced and thereby the risk of prey theft is high, the individual that received a prey item consumes it in a concealed place. Concomitantly, nestlings vocalize intensely probably to indicate their motivation to siblings to not share their food item, since this vocal behaviour was particularly frequent in younger individuals for which the risk of being robbed is higher than in their older siblings. Furthermore, nestlings consumed more rapidly a food item when their siblings vocalized intensely presumably because the intensity of siblings' vocalizations is associated with a risk of prey theft. Our correlative study suggests that sibling competition favoured the evolution of sib-sib communication under a wide range of situations.
PID Serval
serval:BIB_42DD9E6D4F19
Date de création
2008-08-16T15:22:49.004Z
Date de création dans IRIS
2025-05-20T14:01:45Z
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Nom
BIB_42DD9E6D4F19.P001.pdf
Version du manuscrit
preprint
Taille
231.09 KB
Format
Adobe PDF
PID Serval
serval:BIB_42DD9E6D4F19.P001
Somme de contrôle
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