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    Ei-Ichi Izawa & Shigeru Watanabe (2011). Observational Learning in the Large-Billed Crow (Corvus Macrorhynchos): Effect of Demonstrator-Observer Dominance Relationship. Interaction Studies 12 (2):281-303.
    Exploiting the skills of others enables individuals to reduce the risks and costs of resource innovation. Social corvids are known to possess sophisticated social and physical cognitive abilities. However, their capacity for imitative learning and its inter-individual transmission pattern remains mostly unexamined. Here we demonstrate the large-billed crows' ability to learn problem-solving techniques by observation and the dominance-dependent pattern in which this technique is transmitted. Crows were allowed to observe one of two box-opening behaviours performed by a dominant or (...)
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  2. Ei-Ichi Izawa & Shigeru Watanabe (2011). Observational Learning in the Large-Billed Crow : Effect of Demonstrator-Observer Dominance Relationship. Interaction Studiesinteraction Studies Social Behaviour and Communication in Biological and Artificial Systems 12 (2):281-303.
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  3. Shigeru Watanabe (2006). Do Animals Have" Theory"?—Naive Biology in Pigeons—. In D. Andler, M. Okada & I. Watanabe (eds.), Reasoning and Cognition. 2--205.
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  4. Shigeru Watanabe, Takako Suzuki & Yumiko Yamazaki (2009). Reinforcing Property of Music for Non-Human Animals: Analysis with Pigeons. In David Papineau (ed.), Philosophy. Oxford University Press 121--1.
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