1. Faculty of Environmental Science, University of Human Environments, 6–2 Kamisanbonmatsu Motojuku, Okazaki City, Aichi 444–3505, Japan
2. Sado Japanese Crested Ibis Conservation Center, Government of Niigata Prefecture, 377–4 Nagaune, Sado City, Niigata 952–0101, Japan
3. Center for Toki and Ecological Restoration, Niigata University, 1101–1 Niibo-Katagami, Sado City, Niigata 952–0103, Japan
4. Yamashina Institute for Ornithology, 115 Konoyama Abiko, Chiba 270–1145, Japan