Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"repertoire size"”.
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Call Combinatoriality in Birds
… not only reflects considerable variation in repertoire size, but also in the organisation of acoustic elements, both within and across calls. A fundamental challenge for understanding this variation lies in the subjective nature of call repertoire classification, where inconsistent …
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Use of Song Types by Male Carolina Chickadees (Poecile carolinensis)
… geography and few detailed accounts their song repertoires are available. Also, the use of song types among breeding stages has not been studied in Carolina chickadees. Therefore, my objectives were to determine the size of the song type repertoires of Carolina Chickadees in east-central …
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Effects of urban noise on vocalisations of tūī (Prosthemadera novaeseelandiae) : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Conservation Biology at Massey University, Auckland, New Zealand
… to motorway. As predicted a smaller syllable repertoire size was found in the sites near the motorway compared to repertoires at nonmotorway sites. The presence of site-specific syllables and phrases and site-specific clusters in a Ward cluster analysis, as well as a reduced degree of syllable …
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Comparative study of the vocalizations and singing behavior of four Aimophila sparrows
… 5, 3, and 6 types of calls were present in the repertoires of Rufous-crowns, Rufous-wings, Cassin's, and Five-stripes, respectively. Songs were sung from the ground, or from a variety of perch heights. Only Cassin's and Rufous-crowns regularly sang flight songs. Cassin's Sparrows sang a higher …
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Behavioural, mensural, and ecological correlates of polygyny in the eastern meadowlark (Sturnella magna)
… 1969). Male attributes investigated were male size and song behaviour. Six measures of male size were taken: weight, flattened and natural wing chord length, culmen length, bill depth and length of the tarsometatarsus. In 1983 song repertoire size and song versatility measures were …
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Dialect formation in fragmented populations of the endangered North Island kokako (Callaeas wilsoni)
… effect on song similarity, generating song repertoire divergence, was observed at a microgeographic scale within discontinuous populations (Chapter 2). In addition, juvenile dispersal across portions of tenuously connected habitat, which have strikingly different song cultures, suggests that …