Illusions promote mating success in great bowerbirds

Kelley, Laura A. and Endler, John A. 2012, Illusions promote mating success in great bowerbirds, Science, vol. 335, no. 6066, pp. 335-338, doi: 10.1126/science.1212443.

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Title Illusions promote mating success in great bowerbirds
Author(s) Kelley, Laura A.
Endler, John A.ORCID iD for Endler, John A.
Journal name Science
Volume number 335
Issue number 6066
Start page 335
End page 338
Total pages 4
Publisher American Association for the Advancement of Science
Place of publication Washington, D. C.
Publication date 2012
ISSN 0036-8075
Keyword(s) bowerbird
sexual selection
Summary Sexual selection studies normally compare signal strengths, but signal components and sensory processing may interact to create misleading or attention-capturing illusions. Visual illusions can be produced by altering object and scene geometry in ways that trick the viewer when seen from a particular direction. Male great bowerbirds actively maintain size-distance gradients of objects on their bower courts that create forced-perspective illusions for females viewing their displays from within the bower avenue. We show a significant relationship between mating success and the female's view of the gradient; this view explains substantially more variance in mating success than the strength of the gradients. Illusions may be widespread in other animals because males of most species display to females with characteristic orientation and distance, providing excellent conditions for illusions.
Language eng
DOI 10.1126/science.1212443
Field of Research 060801 Animal Behaviour
060399 Evolutionary Biology not elsewhere classified
Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2012, American Association for the Advancement of Science
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