 R. a. korejewi ( Zarudny , 1905 ) ( includes the dubious forms deserticolor , tsaidamensis and arjanicus ) . This subspecies breeds in south central Asia from southern and eastern Iran east to western China , and in the Indian subcontinent in Kashmir and Ladakh . It is slightly larger than the nominate race , with paler brown upperparts and slightly paler slate underparts . It has a weak brown stripe through the eye . 
