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Akira Chiba
Department of Biology, Nippon Dental University School of Dentistry at Niigata
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Koichi Murata
Department of Wildlife Science, College of Bioresource Sciences, Nihon University
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Shigeki Mizuno
Department of Agricultural and Biological Chemistry, College of Bioresource Sciences, Nihon University
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Ryuhei Honma
Niigata Prefecture Wild Bird Conservation Group
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Fumio Sugimori
Research Center, Yamashina Institute of Ornithology