Great Bowerbirds Create Theaters with Forced Perspective When Seen by Their Audience
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منابع مشابه
Great Bowerbirds Create Theaters with Forced Perspective When Seen by Their Audience
Birds in the infraorder Corvida [1] (ravens, jays, bowerbirds) are renowned for their cognitive abilities [2-4], which include advanced problem solving with spatial inference [4-8], tool use and complex constructions [7-10], and bowerbird cognitive ability is associated with mating success [11]. Great bowerbird males construct bowers with a long avenue from within which females view the male di...
متن کاملMale great bowerbirds create forced perspective illusions with consistently different individual quality.
Males often produce elaborate displays that increase their attractiveness to females, and some species extend their displays to include structures or objects that are not part of their body. Such "extended phenotypes" may communicate information that cannot be transmitted by bodily signals or may provide a more reliable signal than bodily signals. However, it is unclear whether these signals ar...
متن کاملHow do great bowerbirds construct perspective illusions?
Many animals build structures to provide shelter, avoid predation, attract mates or house offspring, but the behaviour and potential cognitive processes involved during building are poorly understood. Great bowerbird (Ptilinorhynchus nuchalis) males build and maintain display courts by placing tens to hundreds of objects in a positive size-distance gradient. The visual angles created by the gra...
متن کاملIllusions promote mating success in great bowerbirds.
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 ...
متن کاملComment on "Illusions promote mating success in great bowerbirds".
Kelley and Endler (Reports, 20 January 2012, p. 335) claim that male great bowerbirds construct a visual illusion, using display object gradients, that affects mating success. We argue that they provide inadequate statistical support for their hypothesis, inappropriately exclude important data, and do not consider other display traits that explain mating success. We propose a more plausible alt...
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ژورنال
عنوان ژورنال: Current Biology
سال: 2010
ISSN: 0960-9822
DOI: 10.1016/j.cub.2010.08.033