Great shot Zoom!
I don't think I have ever seen one this out in the open, let alone have it sit there long enough to be photo'd. As for the overshrpening, the only thing I can see and correct me if I'm wrong as a sign of it, is there are "ants" marching down it's backline and head and around the edges. It could be more of a compression issue, doing all your post processing and then shrinking it for web display(shrinking it will effetively sharpen it more) leading to an over sharpened look. Full size I'm sure it looks fantastic. Either way, it's a great shot.