Short-tailed Albatross Phoebastria albatrus
Common. Endemic. Few birds seen around Izu Islands, E Honshu; off Chiba, Ibaraki and Fukushima Pref mainly in spring; Feb to May. Also seen E Honshu and S Hokkaido in mid-autumn; Nov to Des.
Breeding sites are confirmed on Torishima, Izu Is; 1,011 pairs and ＞5,000 individuals in 2018-2019 season, and dozen pairs on Kita-kojima and Minami-kojima; Senkaku Is Okinawa Pref. Mukojima Is, Bonin Is has been re-introduced since 2008 and 2 pairs succeeded breeding.
Almost all Torishima chicks (expect a few chicks) are had rings/flag.
We referred to plumage stages Howell (2012).