Titre
Landing force reveals new form of motion-induced sound camouflage in a wild predator.
Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
Schalcher, K.
Auteure/Auteur
Milliet, E.
Auteure/Auteur
Séchaud, R.
Auteure/Auteur
Bühler, R.
Auteure/Auteur
Almasi, B.
Auteure/Auteur
Potier, S.
Auteure/Auteur
Becciu, P.
Auteure/Auteur
Roulin, A.
Auteure/Auteur
Shepard, ELC
Auteure/Auteur
Liens vers les personnes
Liens vers les unités
ISSN
2050-084X
Statut éditorial
Publié
Date de publication
2024-07-24
Volume
12
Peer-reviewed
Oui
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: epublish
Publication Status: epublish
Résumé
Predator-prey arms races have led to the evolution of finely tuned disguise strategies. While the theoretical benefits of predator camouflage are well established, no study has yet been able to quantify its consequences for hunting success in natural conditions. We used high-resolution movement data to quantify how barn owls (Tyto alba) conceal their approach when using a sit-and-wait strategy. We hypothesized that hunting barn owls would modulate their landing force, potentially reducing noise levels in the vicinity of prey. Analysing 87,957 landings by 163 individuals equipped with GPS tags and accelerometers, we show that barn owls reduce their landing force as they approach their prey, and that landing force predicts the success of the following hunting attempt. Landing force also varied with the substrate, being lowest on man-made poles in field boundaries. The physical environment, therefore, affects the capacity for sound camouflage, providing an unexpected link between predator-prey interactions and land use. Finally, hunting strike forces in barn owls were the highest recorded in any bird, relative to body mass, highlighting the range of selective pressures that act on landings and the capacity of these predators to modulate their landing force. Overall, our results provide the first measurements of landing force in a wild setting, revealing a new form of motion-induced sound camouflage and its link to hunting success.
PID Serval
serval:BIB_C08FEEBA0AC2
PMID
Open Access
Oui
Date de création
2024-07-26T12:10:16.206Z
Date de création dans IRIS
2025-05-20T21:47:43Z
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Nom
39046781_BIB_C08FEEBA0AC2.pdf
Version du manuscrit
published
Licence
https://creativecommons.org/licenses/by/4.0
Taille
14.18 MB
Format
Adobe PDF
PID Serval
serval:BIB_C08FEEBA0AC2.P001
URN
urn:nbn:ch:serval-BIB_C08FEEBA0AC26
Somme de contrôle
(MD5):3af9550d18fdf0835c5d7b927d195924