Family Old World Warblers and Parrotbills (Sylviidae)

Least Concern

Eastern Orphean Warbler (Sylvia crassirostris)


French: Fauvette orphéane German: Nachtigallengrasmücke Spanish: Curruca mirlona oriental

Sylvia crassirostris


, 1830,



Until recently considered conspecific with S. hortensis, but differs in its more clearly demarcated slaty crown and paler mantle and back (2); whiter underparts (1); slightly larger size including longer bill (effect size for bill 2.41, score 2); and different song, involving greater length of phrase (at least 2), number of notes per phrase (ns[2]), higher maximum number (five vs two) of repetitions of same note (3), and number of different note types per phrase (ns[2]). Form balchanica of dubious validity, perhaps part of a cline#R. Three subspecies currently recognized.

What do (1) and (2) mean? Learn more about the scoring system.
Subspecies and Distribution
  • S. c. crassirostris Cretzschmar, 1830 – SE Europe (E from Slovenia) E to Turkey, Levant, NW Iran and W Azerbaijan; non-breeding mainly Sudan (perhaps E Chad) E to W Yemen.
  • S. c. balchanica Zarudny & Bilkevich, 1918 – SW Caspian Sea region and NE Iraq E to SE Turkmenistan and SE Iran; non-breeding S Iran, S Pakistan and SE Arabia (United Arab Emirates, Oman).
  • S. c. jerdoni (Blyth, 1847) – S & SE Kazakhstan, E Uzbekistan and W Kyrgyzstan S to Afghanistan and W Pakistan, possibly also extreme SE Iran; non-breeding India.
  • Descriptive notes

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    Recommended citation

    del Hoyo, J. & Collar, N. (2019). Eastern Orphean Warbler (Sylvia crassirostris). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 19 February 2019).