000229156 001__ 229156
000229156 005__ 20190617200527.0
000229156 022__ $$a0179-1613
000229156 02470 $$2ISI$$a000403456000003
000229156 0247_ $$a10.1111/eth.12612$$2doi
000229156 037__ $$aARTICLE
000229156 245__ $$aNo need to shout: Effect of signal loudness on sibling communication in barn owls
000229156 269__ $$a2017
000229156 260__ $$c2017
000229156 300__ $$a6
000229156 336__ $$aJournal Articles
000229156 500__ $$a<span class="__dimensions_badge_embed__" data-doi="10.1111/eth.12612"></span><script async src="https://badge.dimensions.ai/badge.js" charset="utf-8"></script>
000229156 520__ $$aIn animal communication, signal loudness is often ignored and seldom measured. We used a playback experiment to examine the role of vocal loudness (i.e., sound pressure level) in sibling to sibling communication of nestling barn owls Tyto alba. In this species, siblings vocally negotiate among each other for priority access to parental food resources. Call rate and call duration play key roles in this vocal communication system, with the most vocal nestlings deterring their siblings from competing for access to the food item next delivered by parents. Here, we broadcast calls at different loudness levels and call rate to live nestlings. The loudness of playback calls did not affect owlets’ investment in call rate, call duration or call loudness. The rate at which playback calls were broadcast affected owlets’ call rate but did not influence their response in terms of loudness. This suggests that selection for producing loud signals may be weak in this species, as loud calls may attract predators. Moreover, given that owlets do not overlap their calls and that they communicate to nearby siblings in the silence of the night, loud signals may not be necessary to convey reliable information about food need.
000229156 6531_ $$aacoustics
000229156 6531_ $$aamplitude
000229156 6531_ $$abegging
000229156 6531_ $$acommunication
000229156 6531_ $$acompetition
000229156 6531_ $$amultiple signals
000229156 6531_ $$anegotiation
000229156 6531_ $$aplayback
000229156 700__ $$aDreiss, Amélie N.
000229156 700__ $$aDucouret, Pauline
000229156 700__ $$aRuppli, Charlène A.
000229156 700__ $$aRossier, Virginie
000229156 700__ $$aHernandez, Lucile
000229156 700__ $$aFalourd, Xavier
000229156 700__ $$aMarmaroli, Patrick
000229156 700__ $$aCazau, Dorian
000229156 700__ $$aLissek, Hervé
000229156 700__ $$aRoulin, Alexandre
000229156 773__ $$q419-424$$k6-7$$j123$$tEthology
000229156 8560_ $$fherve.lissek@epfl.ch
000229156 909C0 $$xU10380$$0252392$$pLTS2
000229156 909CO $$qGLOBAL_SET$$pSTI$$ooai:infoscience.tind.io:229156$$particle
000229156 917Z8 $$x157878
000229156 937__ $$aEPFL-ARTICLE-229156
000229156 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000229156 980__ $$aARTICLE