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The Effect of Nest Acoustics on the Begging Calls of Nestling Tree Swallows

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dc.contributor.author Fairhurst, Elizabeth
dc.date.accessioned 2010-12-15T13:31:06Z
dc.date.available 2010-12-15T13:31:06Z
dc.date.issued 2010-12-15
dc.identifier.uri http://hdl.handle.net/10222/13135
dc.description.abstract Animals’ long-distance acoustic signal structure minimizes habitat-specific attenuation and distortion, but it is unknown how environmental acoustics shape the signals of dependent young, or short-range signals generally. I investigated the influence of the nest environment on nestling tree swallows’ begging calls by relating nest reverberation and resonance to nest structure; relating call features to nest reverberation, resonance and structure; and testing whether call structure reduced distortion in the home nest. Reverberation was stronger in wider cavities with intact ceilings. Nestlings used shorter calls in more reverberant cavities, and longer calls with higher middle frequency and lower minimum frequency in wider cavities with smoother walls, but did not adjust call frequency in relation to resonance. Calls originally produced in a given nest did not transmit with less distortion than calls originally produced in other nests. These findings suggest that the nest environment may shape the structure of begging calls. en_US
dc.language.iso en en_US
dc.subject acoustics en_US
dc.subject begging en_US
dc.subject Tachycineta bicolor en_US
dc.title The Effect of Nest Acoustics on the Begging Calls of Nestling Tree Swallows en_US
dc.date.defence 2010-12-06
dc.contributor.department Department of Biology en_US
dc.contributor.degree Master of Science en_US
dc.contributor.external-examiner Peter McGregor en_US
dc.contributor.graduate-coordinator Hal Whitehead en_US
dc.contributor.thesis-reader Andrew Horn en_US
dc.contributor.thesis-reader Leslie Phillmore en_US
dc.contributor.thesis-supervisor Marty Leonard en_US
dc.contributor.ethics-approval Received en_US
dc.contributor.manuscripts Not Applicable en_US
dc.contributor.copyright-release Not Applicable en_US

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