Responses to mirror-image stimulation in jungle crows (Corvus macrorhynchos) |
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| Authors: | T. Kusayama H. -J. Bischof S. Watanabe |
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| Affiliation: | (1) Department of Psychology, Keio University, Mita 2-15-45, Minato-Ku, Tokyo, Japan e-mail: swat@flet.keio.ac.jp, Fax: +81-3-54433897, JP;(2) Department of Zoology, University of Bielefeld, Bielefeld, Germany, DE |
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| Abstract: | Four jungle crows (Corvus macrorhynchos) were exposed to a mirror placed either vertically or horizontally. The most frequently observed behaviors were pecking at the mirror and wing flapping when looking toward the mirror. These behavior patterns, which were only rarely observed when the mirror was reversed, can be interpreted as aggressive behaviors against a conspecific. The vertical mirror evoked the behaviors more often than the horizontal mirror. The present results suggest that crows perceive their mirror image as an image of a conspecific, not as their own. Received: 16 December 1999 / Accepted after revision 29 January 2000 |
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| Keywords: | Jungle crows Self-image Mirror stimulation Social behavior Aggression |
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