NAV. Africa, and Egypt on passage ; winters in S. Arabia and C. and S. Africa.
"C. c. kleinschtnidti" Schiebel has been described from Corsica as being darker grey above, but does not appear separable.
C. canorus bangs! Obcrholscr (" C. minor" of authors). Smaller than "canorus." Wing 9 190-217. Bill also smaller. Preeds.—Spain, NAV. Africa (Morocco to Tunis). Occurs irregularly Canaries on passage. Its range to east is still uncertain.