1. Biodiversity Division National Institute for Environmental Studies Tsukuba Japan
2. Wild Bird Society of Japan Ibaraki Mito Japan
3. Forestry Research Institute, Hokkaido Research Organization Bibai Japan
4. IDEA Consultants, Inc., Tuzuki‐ku Yokohama Japan
5. Nara Prefectural Government Nara Japan
6. Graduate School of Agriculture Kyoto University Kyoto Japan