Female White-capped Bunting I think:
http://orientalbirdimages.org/birdi...ecies&Bird_ID=1938&Bird_Family_ID=&pagesize=1
I think it's a 1stW Rock Bunting
You can see some of 1stW RB from Iran in the following links:
igshid=p0v9ljrjao5w"]https://www.instagram.com/p/BtVWtw-gebg/?igshid=p0v9ljrjao5w[/URL]
https://www.instagram.com/p/BbxPVyZjQzu/?igshid=1m3u76e1ejv9m
Rock Bunting in all plumages has more extensive dark tertial centres with very straight edges.
In this bird, at least the lower tertial shows an angled edge.
Also, the head pattern looks a bit too subdued for Rock, with duskier ear coverts.
Pine Bunting, or poorly marked Yellowhammer (or hybrid) seems like the best bet.
Not sure that I see what you mean, Grahame.
None of the birds in that PDF file show an angled or crooked tertial edge to my eyes, at least not to the extent of the OP bird?
Are there any more photographs of this bird, Shahrzad?
That is a Rock Bunting indeed but clearly not the sane bird (cf. black loral line, pale ear-coverts).