Bulwer’s Petrel
Bulwer’s Petrel Bulweria bulwerii
Common around Izu Is, Bonin Is, Volcano Is, S Kyusyu and Okinawa. Summer breeder, population increase summer to autumn.
Breeding sites are confirmed on Izu Is, Bonin Is, n and s Kyusyu, and W Okinawa.Breeding sites;Tokyo: Izu Is; Onohara-jima, Hachijyo-kojima, Torishima, Bonin Is; Kitano-shima, Higashi-jima, Minami-jima, Tatsumi-jima, Nishino-shima, Volcano Is; Kita-iwo-jima, Iwo-jima, Minami-iwo-jima.Miyazaki Pref: Birou-jima, Kaminone-jima, Hanmya-tou.Okinawa Pref: Nakano-ugan-shima.