Grey-headed Wagtail, Norfolk (1 Viewer)

Hi all,

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/gallery/display.cgi?gallery=gallery12&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.

The olive green necklace, the yellow throat, the white stripe between yellow throat and darker head. Would make it I think a thunbergi.

http://waarneming.nl/soort/info/1026

and:
http://waarneming.nl/soort/photos/1026

I would also say thunbergi.

I agree teunissen both with the identity of the bird and Bird Boredomness

Variation inside a subspecies is enough IMHO to explain many so-called hybrids or intergrades (true intergrades do exist of course)

haha, thanks!
(It is actually time for me to write something new on that blog. In the meanwhile so many new interesting things happened.. )