Hooded Merganser

This was taken yesterday afternoon.  I have finally come up with a new solution that allows me to get very close to water level and this is one of the results.  This female Hooded Merganser has been circulating around my area solo.  It came close enough to allow me to get this decent shot.

Iso 640, 200-500 at 440 mm,F8, 1000 ,D 500, handheld, about 50% full frame, DxO Photo Lab, ACR 10, Topaz adjust, Topaz De noise, TK, sharpening action at 50% 
(I make one comment here about why 440 and not 500 mm?  This is one problem I have with the Nikon 200-500 mm lens.  There is no lock at 500 mm.   I have Lens Coat on the lens and occasionally it is difficult to tell whether one is that 500 mm or less.  In the heat of the action of taking pictures, sometimes the lens will slip below 500 mm.  Perhaps others have had the same problem?)