Department of Psychology, Keio University


Ei-Ichi Izawa (Professor)


Biological Psychology,Animal Behavior,Neuroethology

Introduction of my research

The ultimate goal of my lab is to understand the evolution of animal behavior at the different levels: brain/body anatomy and physiology, and behavioral functions. To achieve the goal, we study crows, highly social birds, as a striking model for the convergent evolution of the sophisticated behavior in comparison to primates by using multidisciplinary approaches (behavioral experiment/observation in the lab and the field station, and physiological and anatomical experiments).
Home Page: HERE


Mita Laboratory B103C (TEL:23371)
Access to Mita Campus:HERE

Main publications / articles

Flexibility of pecking motor control to artificially extended bill in crows but not in pigeons. (Royal Society open science, 4, 2017)

Avian brains: insights from development, behaviors and evolution. (Development, Growth, & Differentiation, 59, 2017)

Adaptive bill morphology for enhanced tool manipulation in New Caledonian crows. (Scientific Reports, 6, 2016)

Sex-reversed correlation between stress levels and dominance rank in a captive non-breeder flock of crows. (Hormones and Behavior 73, 2015)


Neural-activity mapping of memory-based dominance in the crow:neural networks integrating individual discrimination and social behaviour control. (Neuroscience, 197, 2011)

A Stereotaxic Atlas of the Brain of the Jungle Crow (Corvus macrorhynchos). Watanabe & Hofman (Eds.), Integration of Comparative Neuroanatomy and Cognition, Keio University Press, 2007)

Academic societies/organizations

The Japanese Society for Animal Psychology,Japan Ethological Society,The Japan Neuroscience Society,The Zoological Society of Japan,The Ornithological Society of Japan,The Japanese Society for Comparative Physiology and Biochemistry, Society for Neuroscience,International Ethological Congress


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