M635_Guy wroteOccasionally our buddy Trench is a little...enthusiastic and hard . There was one key piece of information in there though - reset the camera before fiddling with your settings. The D800 is pretty complex, and it is possible there is something set that is the difference between your D800 and D600 performance (though it sounds like you did need some guidance on the birding settings).
Consider Thom Hogan\'s guide to the D800 - incredibly detailed and useful. Good luck!
Thank you Guy ... I\'m willing to try anything and everything at this stage ... know any Black Magic incantations