Never have seen one of this guys in breeding plumage, in Spain they are always in winter dress :-)
The BG, pose, DOF, composition, perch and eye are killer. In my opinion, but it is only a matter of taste, the image seems just a bit bright and I think that adjusting the levels in the Bg and in the whites would made the bird poo even more. Very good image... I am envious!
I like the angle, perch, eye contact and BG and would give it a bit more room at the bottom since the perch looks so nice and might sharpen the bird a tad more. Thanks for sharing, it's always great to see beautiful birds nesting far north.