Overlapping signals in banded wrens: long-term effects of prior experience on males and females

Behavioral Ecology : Official Journal of the International Society for Behavioral Ecology
M L HallSandra L Vehrencamp

Abstract

We tested the signal value of song overlapping in banded wrens (Thryothorus pleurostictus), using interactive playback to either overlap or alternate with their songs. Males shortened song duration and decreased variability in song length when their songs were overlapped by playback, suggesting that they were attempting to avoid being overlapped and perhaps being less aggressive. A novel finding was an effect of long-term prior experience: song lengths remained relatively short in alternating trials that followed two or more days after overlapping trials. Approach responses to the two treatments did not differ overall, but there was a parallel effect of prior experience: males tended to stay further from the speaker during alternating treatments if they had previously been overlapped by playback. Some females paired to the male subjects sang in response to playback and were also influenced by prior experience, singing more during alternating trials that had not been preceded by an overlapping trial. Male overlappers may signal dominance over a rival to other male or female receivers in a communication network, but it is currently unclear whether overlapping indicates motivation to escalate an aggressive interaction, or whether ...Continue Reading

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Citations

Jan 24, 2007·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·S E Roian EgnorMarc D Hauser
Jul 11, 2006·Proceedings. Biological Sciences·Anya E IllesSandra L Vehrencamp
Feb 23, 2008·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·J Scott Jordan
Nov 25, 2014·Behavioral Ecology : Official Journal of the International Society for Behavioral Ecology·Sandra L VehrencampJohn M Koltz
Dec 23, 2006·The Journal of Animal Ecology·Rouven SchmidtMarc Naguib
Sep 20, 2011·Ethology : Formerly Zeitschrift Für Tierpsychologie·K E CainE D Ketterson
Nov 7, 2009·The Journal of Animal Ecology·Valentin Amrhein, Sabine Lerch
Mar 1, 2009·Journal of Avian Biology·Michelle L HallSandra L Vehrencamp
Apr 9, 2008·Behavioral Ecology : Official Journal of the International Society for Behavioral Ecology·Sandra L VehrencampAnastasia H Dalziell

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