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).