A few days ago I posted a few tips on how to photograph wildlife at night. What I forgot to mention is that you will also need a good sturdy tripod. When using big lenses you need something as big to support them. I have one of the heaviest lenses Nikon makes, the 600mm F4 for that reason I also own a Really Right Stuff series 3 tripod and full gimbal head.
This shot was taken at Okaukuejo using the really right stuff tripod.