Department of Zoology National Museum of Nature and Science 4-1-1 Amakubo Tsukuba Ibaraki 305-0005 Japan;
Amami Ornithologists' Club 12-8 Nazewako-cho Amami Kagoshima 894-0007 Japan;
Department of Zoology National Museum of Nature and Science 4-1-1 Amakubo Tsukuba Ibaraki 305-0005 Japan;
Conservation Division Wild Bird Society of Japan 3-9-23 Nishi-gotanda Shinagawa-ku Tokyo 141-0031 Japan;
KIKAI Institute for Coral Reef Sciences 1508 Shiomichi Kikai-cho Oshima-gun Kagoshima 891-6151 Japan;