Titre
Nestling barn owls beg more intensely in the presence of their mother than in the presence of their father
Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
Roulin, A.
Auteure/Auteur
Bersier, L. F.
Auteure/Auteur
Liens vers les personnes
Liens vers les unités
ISSN
0003-3472
Statut éditorial
Publié
Date de publication
2007
Volume
74
Numéro
4
Première page
1099
Dernière page/numéro d’article
1106
Peer-reviewed
Oui
Langue
anglais
Résumé
Nestling begging behaviour may be an honest signal of need used by parents to adjust optimally both feeding rate and within-brood food allocation. Although several studies showed that mothers and fathers can be differentially responsive to nestling begging behaviour with one parent showing a stronger tendency to feed the offspring that beg the most, little information is yet available on whether offspring beg for food at different intensities from the mother than father. In the present study, we investigated in nestling barn owls whether the intensity of vocal begging behaviour in the presence of the mother and in the presence of the father is different. A difference is expected because reproductive tasks are divided between the sexes with fathers bringing more food items to the nest than mothers. The results show that although mothers transfer their prey item to one of the offspring more rapidly than fathers once in their nestbox, nestlings begged more intensely in the presence of their mother than in the presence of their father. To our knowledge, this is the first empirical evidence that offspring vocalize to different levels in the presence of their mother than in the presence of their father.
PID Serval
serval:BIB_7656A2201BD7
Date de création
2008-01-24T16:42:47.568Z
Date de création dans IRIS
2025-05-20T23:25:49Z
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BIB_7656A2201BD7.P001.pdf
Version du manuscrit
preprint
Taille
213.66 KB
Format
Adobe PDF
PID Serval
serval:BIB_7656A2201BD7.P001
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