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 10 of 10 for “"playback experiment"”.
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Post-breeding public information use in a ground-nesting songbird community
… on avian community responses by conducting a playback experiment. I hypothesized that Veery fledgling vocalizations present during the post-breeding season are PI cues used by Veeries and other ground-nesting songbirds (i.e., Ovenbirds [Seiurus aurocapilla]) for territory establishment in …
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Comparative ecology of the endemic Cyprus Warbler and the congeneric Sardinian Warbler: Implications of recent coexistence
… considerable interspecific home-range overlap. A playback experiment indicated that Cyprus Warblers reacted equally strongly to conspecific and congeneric song in areas where the two species coexist, but less strongly to congeneric than conspecific song in areas where Sardinian Warblers did not …
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Vocal mimicry in the brown thornbill
… providing young with an opportunity to escape. A playback experiment on the thornbill's primary nest predator, the pied currawong (Strepera graculina), supported the hypothesis that mimetic aerial alarm calls cause distraction and provide nestlings with an opportunity to escape when attacked. …
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Vocal mimicry in the brown thornbill
… providing young with an opportunity to escape. A playback experiment on the thornbill's primary nest predator, the pied currawong (Strepera graculina), supported the hypothesis that mimetic aerial alarm calls cause distraction and provide nestlings with an opportunity to escape when attacked. …
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Natural and Experimental Noise Affects Acoustic Communication in Songbirds
… water-generated noise on songbird behavior, we experimentally broadcast landscape-level playbacks of ocean surf and river noise in coastal California, USA, and riparian habitat in Idaho, USA, respectively. In Chapter 1, we conducted a conspecific playback experiment examining how territorial …
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Acoustic manipulation by brood-parasitic honeyguide
… with the amplitude envelope, I conducted a playback experiment at black-collared barbet nests in the field in Zambia to test whether the shape of the amplitude envelope of honeyguide begging calls increases host provisioning. This cautiously suggested it did not, at least at the levels …
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Dialect formation in fragmented populations of the endangered North Island kokako (Callaeas wilsoni)
… remains poorly understood. Observational and experimental studies of bird song, using a biogeographic approach, provide an opportunity to address this issue. Here I test hypotheses on the emergence and divergence of song cultures related to historical as well as more recent population …
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Manipulating social information to promote frugivory by birds on a Hawaiian island
… heterospecific vocalizations. We conducted 80 playback experiments at native and introduced fruiting plants, and compared responses to silent control periods. Four times as many frugivores were detected and 10 times more frugivory events were recorded at plants during periods of broadcast …
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The Role of Male Vocal Signals During Male-Male Competition and Female Mate Choice in Greater Prairie-Chickens (<i>Tympanuchus cupido</i>)
… vocalize at a relatively lower mean frequency. Playbacks of familiar and unfamiliar males were conducted on the lek to assess the role of vocalizations during male-male competition. Males responded to the prairie-chicken treatments by vocalizing at a faster rate and approaching the playback …