Old World Warblers (Sylviidae)

Chestnut-backed Bush-warbler (Bradypterus castaneus) - HBW 11, p. 608

French: Bouscarle marron German: Molukkenbuschsänger Spanish: Zarzalero Castaño
Other common names: Chestnut/East Indies Bush-warbler, Chestnut Grass-warbler

Taxonomy: Turdinus castaneus Büttikofer, 1893, Minahassa, north Sulawesi.
Distinctive bush-warbler with no known close relatives. Has been suggested as being nearest to B. accentor, but that species has boldly spotted underparts and lacks supercilium, so that similarity rather limited. Race musculus poorly known, and distinction from disturbans based on only two or three specimens; a larger sample of material may show it to be invalid. Three subspecies currently recognized.

Subspecies and Distribution:

  • castaneus (Büttikofer, 1893) - Sulawesi.
  • disturbans (E. J. O. Hartert, 1900) - Buru, in S Moluccas.
  • musculus (Stresemann, 1914) - Seram, in S Moluccas.