Global ETD Search
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Showing 1 to 6 of 6 for “"singing behavior"”.
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Ecological Pressures Selecting for Singing Behavior in Primates
This dissertation explores the social, behavioral, and habitat based influences on the evolution of elaborate vocalizations in primates. The goals of this project were to merge and test hypotheses derived from both the primate morphological origins literature and the musical behavior origins …
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Comparative study of the vocalizations and singing behavior of four Aimophila sparrows
Vocalizations and singing behaviors of Rufous-crowned Sparrows, Rufous-winged Sparrows, and Cassin's Sparrows were analyzed, described, and compared. For comparative purposes, data from previously studied Five-striped Sparrows were also included. Ten, 5, 3, and 6 types of calls were present in the …
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Pharmacological studies on the contribution of the neuropeptide proctolin to the cephalic control of singing behavior in grasshopper Chorthippus biguttulus (L.1758)
Das artspezifische Gesangsverhalten der Feldheuschrecke Chorthippus biguttulus läßt sich sowohl bei Männchen als auch bei Weibchen durch Injektionen des Pentapeptids Proktolin in das zentrale Protozerebrum auslösen. Das stimulierte Verhalten entspricht bezüglich der seiner zeitlichen Struktur und …
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A Comparison of the Singing Activity of Carolina Wrens <i>(Thryothorus Ludovicianus)</i>) in Urban and Rural Settings
… Understanding how urbanization affects birds’ singing behavior is critical because singing often plays a vital role in attracting mates and defending territories. In addition, as global climate change occurs it will become increasingly important to understand the influence of abiotic factors …
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Extrapair mating behaviors in the field sparrow: nocturnal singing and extraterritorial forays
While there has been much research on the mating behaviors of birds, most attention has focused on elaborate and/or conspicuous mating displays, such as diurnal songs, ornaments, or mating dances. Much less attention has been devoted to investigating the role of more subtle behaviors, particularly …