Arsdel
I do like the pose. I'm wondering if the lack of detail is that perhaps the point of focus was on the rear.....closest to the front as the head does seem less sharp. Also.....at ISO 640 was there perhaps some noise that you removed, thus eliminating some detail?
Arsdel I find Baltimore's difficult to get close to so you've done well with this image. The feathers on the bird's rump and breast seem to be very blurred. Could that be from noise reduction as well?