Male satin bowerbirds (<Emphasis Type="Italic">Ptilonorhynchus violaceus</Emphasis>) compensate for sexual signal loss by enhancing multiple display features |
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Authors: | Benjamin D Bravery Anne W Goldizen |
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Institution: | (1) School of Integrative Biology, University of Queensland, St Lucia, Brisbane, Queensland, 4072, Australia |
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Abstract: | Numerous studies have focussed on the relationship between female choice and the multiple exaggerated sexual traits of males.
However, little is known about the ability of males to actively enhance specific components of their display in response to
the loss of one component. We investigated the capacity of male satin bowerbirds (Ptilonorhynchus violaceus) to respond to the loss of one of their sexual signals by performing an experiment in which we removed decorations at their
bowers. We found that males compensated for decoration loss by increasing bower construction behaviour and decreasing their
latency to bower painting. These results are novel because they suggest that males can assess the quality of their own display
and make decisions about how to augment their displays. We discuss these results in the context of previous studies of mate
choice in satin bowerbirds, as both of the supplementary behaviours we observed are known correlates of male mating success. |
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Keywords: | Multi-component Sexual display Satin bowerbird |
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