Sing Softly And Carry A Big Stick: Signals Of Aggressive Intent In The Song Sparrow

Title:
Sing Softly And Carry A Big Stick: Signals Of Aggressive Intent In The Song Sparrow
Authors:
Akcay, Caglar; Tom, Mari E.; Holmes, Dylan; Campbell, S. Elizabeth; Beecher, Michael D.
Abstract:
Reliability of signalling has been the focus of much research in behavioural ecology, yet few studies have been able to show that putative aggressive signals actually predict subsequent escalation (e. g. attack). This is partly because until recently researchers have usually used stimuli (e. g. song playback) that did not permit subsequent escalation in the form of attack. We presented male song sparrows, Melospiza melodia, with a traditional simulated intrusion that involved only playback of their own song (no-mount condition), or a simulated intrusion that coupled playback of their own song with a taxidermic mount. We hypothesized that aggressive signals that are predictive of attack should increase in frequency when there is a visible intruder present (i.e. in the mount trials). Our results showed that only low-amplitude song (soft song) and wing waves (the latter effect only approached significance) increased in frequency when there was a mount present, consistent with previous research. We discuss these results in the context of how reliability of such a low-cost signal can be maintained, and propose new hypotheses for future research.
Citation:
Akcay, Caglar, Mari E. Tom, Dylan Holmes, S. Elizabeth Campbell, et al. 2011. "Sing Softly And Carry A Big Stick: Signals Of Aggressive Intent In The Song Sparrow." Animal Behaviour 82(2): 377-382.
Publisher:
Elsevier Masson
DATE ISSUED:
2011-08
Department:
Biology
Type:
article
PUBLISHED VERSION:
10.1016/j.anbehav.2011.05.016
PERMANENT LINK:
http://hdl.handle.net/11282/310142

Full metadata record

DC FieldValue Language
dc.contributor.authorAkcay, Caglaren_US
dc.contributor.authorTom, Mari E.en_US
dc.contributor.authorHolmes, Dylanen_US
dc.contributor.authorCampbell, S. Elizabethen_US
dc.contributor.authorBeecher, Michael D.en_US
dc.date.accessioned2013-12-23T16:26:27Z-
dc.date.available2013-12-23T16:26:27Z-
dc.date.issued2011-08en
dc.identifier.citationAkcay, Caglar, Mari E. Tom, Dylan Holmes, S. Elizabeth Campbell, et al. 2011. "Sing Softly And Carry A Big Stick: Signals Of Aggressive Intent In The Song Sparrow." Animal Behaviour 82(2): 377-382.en_US
dc.identifier.issn0003-3472en_US
dc.identifier.urihttp://hdl.handle.net/11282/310142-
dc.description.abstractReliability of signalling has been the focus of much research in behavioural ecology, yet few studies have been able to show that putative aggressive signals actually predict subsequent escalation (e. g. attack). This is partly because until recently researchers have usually used stimuli (e. g. song playback) that did not permit subsequent escalation in the form of attack. We presented male song sparrows, Melospiza melodia, with a traditional simulated intrusion that involved only playback of their own song (no-mount condition), or a simulated intrusion that coupled playback of their own song with a taxidermic mount. We hypothesized that aggressive signals that are predictive of attack should increase in frequency when there is a visible intruder present (i.e. in the mount trials). Our results showed that only low-amplitude song (soft song) and wing waves (the latter effect only approached significance) increased in frequency when there was a mount present, consistent with previous research. We discuss these results in the context of how reliability of such a low-cost signal can be maintained, and propose new hypotheses for future research.en_US
dc.publisherElsevier Massonen_US
dc.identifier.doi10.1016/j.anbehav.2011.05.016-
dc.subject.departmentBiologyen_US
dc.titleSing Softly And Carry A Big Stick: Signals Of Aggressive Intent In The Song Sparrowen_US
dc.typearticleen_US
dc.identifier.journalAnimal Behaviouren_US
dc.subject.keywordEavesdroppingen_US
dc.subject.keywordHonest signallingen_US
dc.subject.keywordMelospiza melodia soft songen_US
dc.subject.keywordSong sparrowen_US
dc.subject.keywordType matchingen_US
dc.identifier.volume82en_US
dc.identifier.issue2en_US
dc.identifier.startpage377en_US
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