Non-Vocal Behaviors Are More Frequent During the Decisive Negotiation Phases in Barn Owl Siblings.

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Etat: Public
Version: Final published version
Licence: CC BY 4.0
ID Serval
serval:BIB_A1B7B96D9C5A
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Non-Vocal Behaviors Are More Frequent During the Decisive Negotiation Phases in Barn Owl Siblings.
Périodique
Animals
Auteur⸱e⸱s
N Dreiss A., Romano A., Flint R., Bates S., Vermunt A., Henry I., A Ruppli C., Roulin A.
ISSN
2076-2615 (Print)
ISSN-L
2076-2615
Statut éditorial
Publié
Date de publication
01/10/2020
Peer-reviewed
Oui
Volume
10
Numéro
10
Pages
E1777
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: epublish
Résumé
Animals produce vibrations or noises by means of body movements, which can play a role in communication. These behaviors enhance signal transmission or receiver attention and could be specifically used during turn-taking phases of a reciprocal exchange of signals. In the barn owl Tyto alba, nestlings vocalize one after the other to negotiate which individual will have priority access to the impending prey item to be delivered by the parents. Owlets adjust their vocalization to their own hunger level and to their siblings' vocalization, withdrawing from the contest in front of highly vocal, and hence hungry, motivated nestmates. As sibling negotiation is a multicomponent display, we examined whether body movements could also be part of the negotiation process. To this end, we analyzed whether the vocalizations of one nestling affected its nestmate's movements in three separate experiments: in natural nests, in the lab, and using a playback procedure. Nestling barn owls move in a variety of ways, such as repeated tapping of the floor with a foot, scratching the floor with claws, or flapping wings. Body movements were more frequent during the turn-taking phases of vocal interactions, when siblings emitted longer calls and at a greater rate. Once an individual monopolized vocal activity, siblings became less vocal and less active. Moreover, owlets produced more noisy body movements during the phases of vocal interactions which are crucial to prevail in negotiation. Non-vocal physical activities might reinforce vocal signals during sibling to sibling (sib-sib) interactions, or reflect owlets' arousal, in the critical period during which they vocally settle which individual will dominate the competition.
Mots-clé
Tyto alba, behavior, gesture, multiple signals, negotiation, turn-taking
Pubmed
Open Access
Oui
Création de la notice
09/10/2020 13:04
Dernière modification de la notice
15/01/2021 7:11
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