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Bannerman’s Shearwater Puffinus bannermani
Common around Bonin Is and Volcano Is, but small population and less opportunity to see. Also rarely seen N Izu Is.
Breeding sites are confirmed on Higashijima, Bonin Is; at least more than 100 birds, and Minami-Iwo-jima, Volcano Is; estimate 6,000 pairs. Breeds Apr-Nov.