Accepted by BBRC as Western O.h.hispanica. (http://www.bbrc.org.uk/download/2002BBRCReport.pdf)
Here are some images of the bird on surfbirds.
Note the the black of the bib reaches the upper breast. Also, note the extent of black above the eye and behind the ear coverts. Also, the scapulars are all black. The black of the lores is extensive and maybe the black just reaches over the bill base, but it is poorly marked on this bird. The above along with the long primary projection, equal in length to the total length of the tertials, for me, identifies this bird as an Eastern O.h.melanoleuca.