Hello,
I dont know, but my thoughts:
- allthough the angle of viewing makes this impossible to judge: even after a second look, this bird gives the impression of an open faced woodpecker to me. Does this bird lacks the black neck-bar of a GSW? If yes, then this the reason for the open-faced look, but this cant be judged here. But .... I am puzzled
- the bird seems to have a long and slender bill. Yes, this is enhanced here by the blurred picture, but bill shape is better for Syrian than for a GSW
- I agree with Roland that the pale red vent is better for Syrian, but within variation for GSW
- Same with the appearantly pale feathering above the bill. This cant be judged here, and more: pale feathers are unusual, but within variation for GSW breeding in Germany.
- Yes, tail pattern is easy within variation for GSW, but there is an old ALULA paper (my copy is in Brühl, cant look at it) that could shed more light on this feature like more comments from others (thank you as allways)
- Yes GSW is known as an irruptive migrant species. And I can understand why this appearantly migrating bird attracted your attention.
Conclusion? If I didnt knew, that this bird attracted your attention by a different behaviour from the local Syrian WP (does Syrian migrate, too?), and knowing the location
and forced to ID this bird (but only then), I would opt for Syrian here.