Taken the other day at the Green Cay Wetlands with a Canon MK-II ISO = 400 f/11 at 1/1000th. of a sec. and a 100-400 - L lens set at 400. Wishing all and there family's a wonderful "09".
Great feather details and the light is nice and soft. Beautiful duck.
I can see a tiny strip on the right edge, looks like an uneven cropped edge. Try to get into the habit of pressing "F" key in Photoshop to cycle though the view modes to help catch edges like this.
I also see a mark or 2 from cloning or masking near the feet.