(公財)山階鳥類研究所は日本で最大の鳥類に関する専門研究機関です。活動は皆様からの賛助会費や寄附金で支えられています。Yamashina Institute for Ornithology is a non-governmental ornithological institute based in Japan.
This is the second of the two TV programs scheduled Sunday 11. June which YIO cooperated. YIO helped in its coverage of Okinawa Rail, an endangered flightless rail endemic to Okinawa Island.