Vagrant? Very rare. A few records in Japan; 1 bird collected Chichijima, Bonin Is in Nov 2011, and Jul 2017, 1 bird seen off Torishima, Izu Is in Sep 2001, 1 bird seen off Iwo-jima, Volcano Is in Jul 2013, and 1 bird seen off Mukojima, Bonin Is in Aug 2019.
Fig. 1. Off Iwo-jima, Volcano Islands. July 5 2013. Blackish upperparts, white crescent behind the eyes and longer bill than Bannerman’s Shearwater.
Fig. 2. Same bird as Fig. 1. Off Iwo-jima, Volcano Islands. July 5 2013.
Fig. 3. Same bird as Fig. 1. Off Iwo-jima, Volcano Islands. July 5 2013.
Fig. 4. Same bird as Fig. 1. Off Iwo-jima, Volcano Islands. July 5 2013.
