Is the dawn chorus an adaptation to warm-up the voice in Adelaide's warbler (Setophaga adelaidae)?

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dc.contributor.authorVazquez-Cardona, Juleyska
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorLogue, David M.
dc.date.accessioned2022-02-17T16:40:11Z
dc.date.available2022-02-17T16:40:11Z
dc.date.issued2021
dc.degree.levelMastersen_US
dc.description.abstractBirds sing intensely during the early morning. I test predictions of the hypothesis that this phenomenon, known as the dawn chorus (DC), is an adaptation to warm-up the voice in male Adelaide’s warblers (Setophaga adelaidae). I also analyze the effects of weather and date on the dawn chorus start time (DCST). I used songs from 29 males recorded in three different years and weather data from a MesoWest weather station. Song performance improves rapidly during the DC, but changes little after dawn. High song-rates lead to rapid improvements in vocal performance. Two out of three measures of performance peak at intermediate air temperatures (Ta). Ta, however, does not exert a strong effect on DCST. Males start to sing later with higher relative humidity, and earlier with increasing precipitation the previous day. This study lends support to the warm-up hypothesis and improves our understanding on the effects of weather on birdsong.en_US
dc.description.sponsorshipNatural Sciences and Engineering Research Council (NSERC)en_US
dc.identifier.urihttps://hdl.handle.net/10133/6147
dc.language.isoen_USen_US
dc.proquest.subject0602en_US
dc.proquest.subject0621en_US
dc.proquestyesYesen_US
dc.publisherLethbridge, Alta. : University of Lethbridge, Dept. of Psychologyen_US
dc.publisher.departmentDepartment of Psychologyen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en_US
dc.subjectbirdsongen_US
dc.subjectsong performanceen_US
dc.subjectbioacousticsen_US
dc.subjectdawn chorusen_US
dc.subjectBirdsongs--Researchen_US
dc.subjectBioacousticsen_US
dc.subjectAnimal communication--Researchen_US
dc.subjectBirds--Vocalization--Researchen_US
dc.subjectBirds--Behavior--Researchen_US
dc.subjectSetophaga--Research--Puerto Ricoen_US
dc.subjectSongbirds--Behavior--Researchen_US
dc.subjectSongbirds--Vocalization--Researchen_US
dc.subjectSongbirds--Effect of temperature on--Researchen_US
dc.subjectDissertations, Academicen_US
dc.titleIs the dawn chorus an adaptation to warm-up the voice in Adelaide's warbler (Setophaga adelaidae)?en_US
dc.typeThesisen_US
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