Wedge-tailed Shearwater

Wedge-tailed Shearwater Ardenna pacifica

Common around S Izu Is, Bonin Is, Volcano Is and Tokara Is to Okinawa. Light morph common S Izu Is, Bonin Is, Volcano Is, but birds of Tokara Is to Okinawa mainly dark morph. Also seen dark morph Izu Is, Bonin Is and sometimes Honshu after typhoon passed.

Breeding sites are confirmed on Torishima; Izu Is, Bonin Is, Volcano Is and perhaps Nakano-ugan-shima (Okinawa Pref).

Fig. 1. Light morph. off Muko-jima, Bonin Islands, Tokyo. Apr 24 2016.
Fig. 2. Light morph. off Hahajima, Bonin Islands, Tokyo. Apr 11 2019.
Fig. 3. Light morph. off Minami Iwo jima, Volcano Islands, Tokyo. Apr 9 2019.
Fig. 4. Light morph. off Minami Iwo jima, Volcano Islands, Tokyo. Apr 9 2019.
Fig. 5. Light morph. off Iwo jima, Volcano Islands, Tokyo. Jul 5 2013.
Fig. 6. Flock of light morph. off Nishinoshima, Bonin Islands, Tokyo. Apr 23 2006.
Fig. 7. Light morph. off Muko-jima, Bonin Islands, Tokyo. Sep 10 2007.
Fig. 8. Light morph. Same bird as Fig. 7. off Muko-jima, Bonin Islands, Tokyo. Sep 10 2007.
Fig. 9. Dark morph. off Yomitan, Okinawa. Jul 4 2009.
Fig. 10. Dark morph. Same bird as Fig. 9. off Yomitan, Okinawa. Jul 4 2009.
Fig. 11. Dark morph. off Aoga-shima, Izu Islands, Tokyo. Sep 23 2009.
Fig. 12. Dark morph. off Chichijima, Bonin Islands, Tokyo. Aug 27 2016.
Fig. 13. Light morph with Streaked Shearwater. off Sofu-iwa, Izu Islands, Tokyo. Apr 20 2006.
Fig. 14. Light morph with Streaked Shearwater. Same bird as Fig. 13. off Sofu-iwa, Izu Islands, Tokyo. Apr 20 2006.
Fig. 15. Light morph. Vagrancy record of n Honshu.