this Grey-headed Wagtail/intergrade was found at West Runton, Norfolk yesterday evening by a couple of friends and myself. As can be seen from the attached image their is some white flecking/marks behind the eye, similar although seemingly to a lesser extent (particularly in front of the eye) than on the recent Kelling bird http://www.surfbirds.com/cgi-bin/gal...ery12&start=25
So, is either the Kelling bird or the attached bird within the variation for thunbergi and how far does the variation in this ssp. extend? If it is a hybrid/intergrade, what is it likely to be with (perhaps flava)?
I know nothing is clear-cut with Wagtails but any suggestions/pictures of similar birds greatly appreciated.