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.
Ogasawara Islands and Iwo Islands
Fig. 1. Off Chichijima, Bonin Islands, Tokyo. Sep. 23 2020.
Fig. 2. Off Chichijima, Bonin Islands, Tokyo. Sep. 23 2020.
Fig. 3. Off Chichijima, Bonin Islands, Tokyo. Sep. 22 2020.
Fig. 4. Off Chichijima, Bonin Islands, Tokyo. Sep. 23 2020.
Fig. 5. Off Mukojima, Bonin Islands, Tokyo. Sep. 21 2020.
Fig. 6. Off Mukojima, Bonin Islands, Tokyo. Sep. 21 2020.
Fig. 7. Off Chichijima, Bonin Islands, Tokyo. Sep. 20 2020.
Fig. 8. Off Chichijima, Bonin Islands, Tokyo. Sep. 20 2020.
Fig. 9. Off Minami-iwo-jima.
Jul. 5 2013.
Fig. 10. Off Minami-iwo-jima.
Sep. 12 2009.
Fig. 11.
Fig. 12.
Okinawa Pref.
Fig. 1. Bulwer’s Petrel in front of Nakanouganjima. 2 Jul. 2022.
Fig. 2. Off Nakanouganjima, Okinawa. 2 Jul. 2022.
Fig. 3. Off Nakanouganjima, Okinawa. 2 Jul. 2022.
Fig. 4. Off Nakanouganjima, Okinawa. 2 Jul. 2022.
Fig. 5. Off Hatomajima, Okinawa. 3 Jul. 2022.
Fig. 6. Off Hatomajima, Okinawa. 3 Jul. 2022.
Fig. 7. Off Hatomajima, Okinawa. 3 Jul. 2022.
Fig. 8. Off Nakanouganjima, Okinawa. 2 Jul. 2022.
Fig. 9. Off Hatomajima, Okinawa. 3 Jul. 2022.
Fig. 10. Off Hatomajima, Okinawa. 3 Jul. 2022.
Fig. 11. Off Hatomajima, Okinawa. 3 Jul. 2022.
Fig. 12. Off Hatomajima, Okinawa. 3 Jul. 2022.
Fig. 13. Off Nakanouganjima, Okinawa. 2 Jul. 2022.
