Hi Manos, over here it would have the appearance of a hen Canvasback. I'm not sure but I think Europe has a similar one called a Pochard. I like the low angle and the outspred wings.
Lovely Image, good moment captured here.
I think its a Common Pochard too.
In addition to Sharpening give a go to toning down the highlights in the water. I feel, the water is drawing too much attention currently.
I like the light and detail captured. The comp and angle is also nice.
I think you should have pushed up the ISO so that you could close the apperture a bit to give you a bit more DOF.
Great pose, low angle and detail, a tad more sat and to tone down the birgt water might help IMO. Also, some more NR would be my suggestion.
Congratulaitons Manos!