Old World Warblers (Sylviidae)

Japanese Bush-warbler (Cettia diphone) - HBW 11, p. 591

French: Bouscarle chanteuse German: Japanbuschsänger Spanish: Cetia Japonés
Other common names: Singing/Chinese/Oriental Bush-warbler, Short-winged Reed-warbler; Manchurian Bush-warbler (canturians)

Taxonomy: Sylvia diphone Kittlitz, 1830, Bonin Islands.
Sometimes treated as conspecific with C. seebohmi. Race canturians has been considered a separate species on basis of differences in plumage and voice; further study, including DNA analysis, required. Birds from S Kuril Is described as race viridis, considered synonymous with sakhalinensis. Borodino Is race restricta (rich rufous-brown above, greyish-olive wash on breast side to undertail-coverts) extinct. Six extant subspecies recognized.

Subspecies and Distribution:

  • borealis C. W. Campbell, 1892 - breeds NE China, adjacent SE Russia (S Ussuriland) and Korea; non-breeding E China (Fujian), Taiwan and N Philippines (Batan Is, Luzon).
  • sakhalinensis (Yamashina, 1927) - S Sakhalin and S Kuril Is; non-breeding SE China.
  • cantans (Temminck & Schlegel, 1847) - Japan, incuding coastal islands S to Yaku-shima, Tanega-shima and Hachijo-jima, also Tsushima and Quelpart I (Cheju-do).

     See all 6 subspecies
  • borealis C. W. Campbell, 1892 - breeds NE China, adjacent SE Russia (S Ussuriland) and Korea; non-breeding E China (Fujian), Taiwan and N Philippines (Batan Is, Luzon).
  • sakhalinensis (Yamashina, 1927) - S Sakhalin and S Kuril Is; non-breeding SE China.
  • cantans (Temminck & Schlegel, 1847) - Japan, incuding coastal islands S to Yaku-shima, Tanega-shima and Hachijo-jima, also Tsushima and Quelpart I (Cheju-do).
  • riukiuensis (Nagamichi Kuroda, 1925) - Ryukyu Is (from Amami-o-shima S to Iriomote-jima).
  • diphone (Kittlitz, 1830) - S Izu Is, Ogasawara Is and Iwo Is.
  • canturians (Swinhoe, 1860) - breeds C & E China (S Gansu and Sichuan E to Jiangsu and W Zhejiang); non-breeding S & SE China, Taiwan, NW Thailand, N & C Indochina and N Philippines.